# Astronomy (ASTR) — Fall 2026 schedule

Santa Ana College · 14 sections · Seat counts as of 2026-10-18

Source: https://colss-prod.cloud.rsccd.edu/Student/Courses

Term dates: Aug 17, 2026 – Dec 5, 2026 (from the sections' dates) · 9 sessions, with dates: /c/santa-ana-college/schedule/fall-2026/index.json · Academic calendar: https://www.sac.edu/admissions/academic_calendar.php

Course descriptions: 2026-2027 catalog, /c/santa-ana-college/catalog/2026-2027/courses/astr.md

## ASTR 109 — Introduction to the Solar System (3 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 81718 | 81718 | Online anytime | Online, no set time | Aug 17–Sep 12 | Christina M. Manzano King | 2 of 40 open, 5 waitlisted |
| 81719 | 81719 | Online anytime | Online, no set time | Oct 12–Dec 5 | Apostol Gramada | 8 of 40 open, 7 waitlisted |
| 81720 | 81720 | Online anytime | Online, no set time | Aug 17–Dec 5 | Christina M. Manzano King | 5 of 40 open, 4 waitlisted |
| 81721 | 81721 | Online anytime | Online, no set time | Aug 17–Dec 5 | Aaron J. Roy | 13 of 40 open, 1 waitlisted |
| 81725 | 81725 | In person, 1 Lecture | Mon/Wed 1:15–2:40pm, HS HS-121 | Aug 17–Dec 5 | Mary M. Usufzy | 11 of 40 open |
| 81727 | 81727 | In person, 1 Lecture | Tue/Thu 4:25–5:50pm, HS HS-121 | Aug 17–Dec 5 | Denyz A. Melchor | 24 of 40 open |
| 84747 | 84747 | In person, 1 Lecture | Tue/Thu 1:45–3:10pm, Off Campus ALA | Aug 17–Dec 5 | Herminio Carrillo | 20 of 40 open |
| 84750 | 84750 | In person, 1 Lecture | Wed/Fri 8:30–9:55am, Off Campus SAM | Aug 17–Dec 5 | Denyz A. Melchor | 12 of 40 open |

## ASTR 110 — Introduction to Stars and Galaxies (3 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 81722 | 81722 | Online anytime | Online, no set time | Aug 17–Oct 11 | Apostol Gramada | 18 of 40 open |
| 81723 | 81723 | Online anytime | Online, no set time | Oct 12–Dec 5 | Christina M. Manzano King | Full (40/40), 5 waitlisted |
| 81728 | 81728 | In person, 1 Lecture | Mon/Wed 2:50–4:15pm, SC SC-208 | Aug 17–Dec 5 | Denyz A. Melchor | 23 of 40 open |
| 84748 | 84748 | Online anytime | Online, no set time | Aug 31–Dec 5 | Aaron J. Roy | 22 of 40 open |
| 85298 | 85298 | Online anytime | Online, no set time | Aug 31–Dec 5 | Aaron J. Roy | 19 of 40 open |

## ASTR 140 — Astronomy Laboratory (1 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 81730 | 81730 | In person, 1 Laboratory | Tue 7:35–10:35pm, SC SC-312 | Aug 17–Dec 5 | Denyz A. Melchor | 21 of 40 open |