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The Irvin Marvin Winer Memorial Mobile Observatory Inc

  • Sonoita, AZ
  • Tax-exempt since May 1984
  • EIN: 52-1334785

Organization summary

Type of Nonprofit

Designated as a Organizations for any of the following purposes: religious, educational, charitable, scientific, literary, testing for public safety, fostering national or international amateur sports competition (as long as it doesn't provide athletic facilities or equipment), or the prevention of cruelty to children or animals.

Donations to this organization are tax deductible.

Summary charts: organization finances over time

Revenue
$36.5k (2024)

Expenses
$55.1k (2024)

Total Assets
$81k (2024)

Total Liabilities
$0 (2024)

Source: Form 990 tax filings from 2011 to 2024

Tax Filings by Year

Form 990 is an information return that most organizations claiming federal tax-exempt status must file yearly with the IRS. Nonprofit Explorer has IRS digitized Form 990 data for filings processed in 2012 and later. If this organization filed an amended return, it may not be reflected below. Duplicate download links may indicate a resubmission or amendment to this organization's original return. Form 990 data is from the IRS.

Fiscal Year Ending Dec.
2024

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$36,524
Expenses
$55,103
Net Income
-$18,579
Net Assets
$81,026
Notable Sources of Revenue Percent of Total Revenue
Contributions $2,447
6.7%
Program Services $34,000
93.1%
Investment Income $77
0.2%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $81,026
Total Liabilities $0
Net Assets $81,026
Compensation
Key Employees and Officers Compensation Other
Mark Trueblood (President) $0 $0
Patricia Trueblood (Sec/Treasurer) $0 $0
Dominic Lodovici (Vice President) $0 $0

Document Links

990-EZ
Filed on Aug. 6, 2025

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
XML

Fiscal Year Ending Dec.
2023

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$20,052
Expenses
$9,849
Net Income
$10,203
Net Assets
$99,605
Notable Sources of Revenue Percent of Total Revenue
Contributions $1,033
5.2%
Program Services $19,000
94.8%
Investment Income $19
0.1%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $99,605
Total Liabilities $0
Net Assets $99,605
Compensation
Key Employees and Officers Compensation Other
Mark Trueblood (President) $0 $0
Patricia Trueblood (Sec/Treasurer) $0 $0
Dominic Lodovici (Vice President) $0 $0

Document Links

990-EZ
Filed on Sept. 12, 2024

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
XML

Fiscal Year Ending Dec.
2022

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$44,071
Expenses
$65,139
Net Income
-$21,068
Net Assets
$89,402
Notable Sources of Revenue Percent of Total Revenue
Contributions $5,264
11.9%
Program Services $38,727
87.9%
Investment Income $80
0.2%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $89,402
Total Liabilities $0
Net Assets $89,402
Compensation
Key Employees and Officers Compensation Other
Mark Trueblood (President) $0 $0
Patricia Trueblood (Sec/Treasurer) $0 $0
Dominic Lodovici (Vice President) $0 $0

Document Links

990-EZ
Filed on May 11, 2023

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2021

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$51,625
Expenses
$29,347
Net Income
$22,278
Net Assets
$110,470
Notable Sources of Revenue Percent of Total Revenue
Contributions $6,035
11.7%
Program Services $45,511
88.2%
Investment Income $79
0.2%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $110,470
Total Liabilities $0
Net Assets $110,470
Compensation
Key Employees and Officers Compensation Other
Mark Trueblood (President) $0 $0
Patricia Trueblood (Sec/Treasurer) $0 $0
Dominic Lodovici (Vice President) $0 $0

Document Links

990-EZ
Filed on Oct. 17, 2022

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
XML

Fiscal Year Ending Dec.
2020

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$28,637
Expenses
$32,061
Net Income
-$3,424
Net Assets
$88,192
Notable Sources of Revenue Percent of Total Revenue
Contributions $2,386
8.3%
Program Services $26,450
92.4%
Investment Income $209
0.7%
Net Fundraising $0
Sales of Assets -$408
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $88,192
Total Liabilities $0
Net Assets $88,192
Compensation
Key Employees and Officers Compensation Other
Mark Trublood (President) $0 $0
Patricia Trueblood (Sec/Treasurer) $0 $0
Dominic Lodovici (Vice President) $0 $0

Document Links

990-EZ
Filed on May 28, 2021

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2019

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$57,474
Expenses
$55,122
Net Income
$2,352
Net Assets
$91,616
Notable Sources of Revenue Percent of Total Revenue
Contributions $4,247
7.4%
Program Services $49,309
85.8%
Investment Income $3,918
6.8%
Net Fundraising $0
Sales of Assets $0
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $91,616
Total Liabilities $0
Net Assets $91,616
Compensation
Key Employees and Officers Compensation Other
Mark Trueblood (President) $0 $0
Patricia Trueblood (Sec/Treas) $0 $0
Dominic Ludovici (Vice President) $0 $0

Document Links

990-EZ
Filed on May 4, 2020

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2018

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$42,699
Expenses
$40,546
Net Income
$2,153
Net Assets
$87,835
Notable Sources of Revenue Percent of Total Revenue
Contributions $1,181
2.8%
Program Services $38,844
91.0%
Investment Income $1,014
2.4%
Net Fundraising $0
Sales of Assets $1,660
3.9%
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $87,835
Total Liabilities $0
Net Assets $87,835
Compensation
Key Employees and Officers Compensation Other
Mark Trueblood (President) $0 $0
Patricia Trueblood (Sec/Treas) $0 $0
Dominic Ludovici (Vice President) $0 $0

Document Links

990-EZ
Filed on May 6, 2019

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2017

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$41,569
Expenses
$71,536
Net Income
-$29,967
Net Assets
$87,003
Notable Sources of Revenue Percent of Total Revenue
Contributions $1,335
3.2%
Program Services $37,667
90.6%
Investment Income $1,153
2.8%
Net Fundraising $0
Sales of Assets $1,414
3.4%
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $87,003
Total Liabilities $0
Net Assets $87,003
Compensation
Key Employees and Officers Compensation Other
Mark Trueblood (President) $0 $0
Patricia Trueblood (Sec/Treas) $0 $0
Dominic Ludovici (Vice President) $0 $0

Document Links

990-EZ
Filed on May 7, 2018

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2016

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$68,388
Expenses
$57,542
Net Income
$10,846
Net Assets
$115,752
Notable Sources of Revenue Percent of Total Revenue
Contributions $26,105
38.2%
Program Services $43,912
64.2%
Investment Income $1,138
1.7%
Net Fundraising $0
Sales of Assets -$2,767
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $115,752
Total Liabilities $0
Net Assets $115,752
Compensation
Key Employees and Officers Compensation Other
Mark Trueblood (President) $0 $0
Patricia Trueblood (Sec/Treas) $0 $0
Michael A'hearn (Vice President) $0 $0

Document Links

990-EZ
Filed on May 1, 2017

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2015

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$35,085
Expenses
$44,041
Net Income
-$8,956
Net Assets
$97,421
Notable Sources of Revenue Percent of Total Revenue
Contributions $4,848
13.8%
Program Services $47,821
> 100%
Investment Income $3,078
8.8%
Net Fundraising $0
Sales of Assets -$20,662
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $97,421
Total Liabilities $0
Net Assets $97,421
Compensation
Key Employees and Officers Compensation Other
Mark Trueblood (President) $0 $0
Patricia Trueblood (Sec/Treas) $0 $0
Michael A'hearn (Vice President) $0 $0

Document Links

990-EZ
Filed on May 5, 2016

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2014

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$59,612
Expenses
$45,912
Net Income
$13,700
Net Assets
$88,175
Notable Sources of Revenue Percent of Total Revenue
Contributions $8,706
14.6%
Program Services $47,822
80.2%
Investment Income $3,006
5.0%
Net Fundraising $0
Sales of Assets $78
0.1%
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $104,175
Total Liabilities $16,000
Net Assets $88,175
Compensation
Key Employees and Officers Compensation Other
Mark Trueblood (President) $0 $0
Patricia Trueblood (Sec/Treas) $0 $0
Michael A'hearn (Vice President) $0 $0

Document Links

990-EZ
Filed on April 28, 2015

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2013

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$80,956
Expenses
$104,123
Net Income
-$23,167
Net Assets
$79,644
Notable Sources of Revenue Percent of Total Revenue
Contributions $29,332
36.2%
Program Services $45,696
56.4%
Investment Income $2,562
3.2%
Net Fundraising $0
Sales of Assets $3,366
4.2%
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $111,644
Total Liabilities $32,000
Net Assets $79,644
Compensation
Key Employees and Officers Compensation Other
Mark Trueblood (President) $0 $0
Patricia Trueblood (Sec/Treas) $0 $0
Michael A'hearn (Vice President) $0 $0

Document Links

990-EZ
Filed on April 25, 2014

Short form tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2012

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$60,607
Expenses
$108,818
Net Income
-$48,211
Net Assets
$95,308
Notable Sources of Revenue Percent of Total Revenue
Contributions $5,363
8.8%
Program Services $35,007
57.8%
Investment Income $1,088
1.8%
Net Fundraising $0
Sales of Assets $19,149
31.6%
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $95,308
Total Liabilities $0
Net Assets $95,308

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2011

Extracted Financial Data

Extracted Financial Data from 990-EZ
Revenue
$56,166
Expenses
$93,736
Net Income
-$37,570
Net Assets
$138,832
Notable Sources of Revenue Percent of Total Revenue
Contributions $2,045
3.6%
Program Services $27,187
48.4%
Investment Income $2,215
3.9%
Net Fundraising $0
Sales of Assets $24,719
44.0%
Net Inventory Sales $0
Other Revenue $0
Assets/Debt
Total Assets $138,832
Total Liabilities $0
Net Assets $138,832

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2010

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2009

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2008

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2007

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2006

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2005

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2004

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2003

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2002

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Dec.
2001

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990-EZ

Short form tax return for a nonprofit’s activities, finances, and governance

PDF

About This Data

What Is This Data?

Nonprofit Explorer includes summary data for nonprofit tax returns and full Form 990 documents, in both PDF and digital formats.

The summary data contains information processed by the IRS during the 2012-2019 calendar years; this generally consists of filings for the 2011-2018 fiscal years, but may include older records. This data release includes only a subset of what can be found in the full Form 990s.

In addition to the raw summary data, we link to PDFs and digital copies of full Form 990 documents wherever possible. This consists of separate releases by the IRS of Form 990 documents processed by the agency, which we update regularly.

We also link to copies of audits nonprofit organizations that spent $750,000 or more in Federal grant money in a single fiscal year since 2016. These audits are copied from the Federal Audit Clearinghouse.

Which Organizations Are Here?

Every organization that has been recognized as tax exempt by the IRS has to file Form 990 every year, unless they make less than $200,000 in revenue and have less than $500,000 in assets, in which case they have to file form 990-EZ. Organizations making less than $50,000 don’t have to file either form but do have to let the IRS they’re still in business via a Form 990N "e-Postcard."

Nonprofit Explorer has organizations claiming tax exemption in each of the 27 subsections of the 501(c) section of the tax code, and which have filed a Form 990, Form 990EZ or Form 990PF. Taxable trusts and private foundations that are required to file a form 990PF are also included. Small organizations filing a Form 990N "e-Postcard" are not included in this data.

Types of Nonprofits

There are 27 nonprofit designations based on the numbered subsections of section 501(c) of the tax code. See the list »

Get the Data

For those interested in acquiring the original data from the source, here’s where our data comes from:

  • Raw filing data. Includes EINs and summary financials as structured data.
  • Exempt Organization profiles. Includes organization names, addresses, etc. You can merge this with the raw filing data using EIN numbers.
  • Form 990 documents. Prior to 2017, these documents were obtained and processed by Public.Resource.org and ProPublica. Bulk PDF downloads since 2017 are available from the IRS.
  • Form 990 documents as XML files. Includes complete filing data (financial details, names of officers, tax schedules, etc.) in machine-readable format. Only available for electronically filed documents. Electronic data released prior to October 2021 is also available through Amazon Web Services.
  • Audits. PDFs of single or program-specific audits for nonprofit organizations that spent $750,000 or more in Federal grant money in a single fiscal year. Available for fiscal year 2015 and later.

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About Nonprofit Explorer

Nonprofit Explorer

Browse millions of annual returns filed by tax-exempt organizations with ProPublica’s Nonprofit Explorer. See details like executive compensation, revenue, expenses and more. Search for an organization or a person, or search the full text of filings.

By Andrea Suozzo, Alec Glassford, Ash Ngu and Brandon Roberts.

Design by Jeff Frankl. Additional development by Ken Schwencke, Mike Tigas, and Sisi Wei.

E-file viewer adapted from IRS e-File Viewer by Ben Getson. Code for scraping audit documents adapated from Govwiki.

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