# Astronomy (ASTR) — Spring 2027 schedule

Santa Ana College · 12 sections · Seat counts as of 2026-10-18

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

Term dates: Feb 8, 2027 – Jun 5, 2027 (from the sections' dates) · 5 sessions, with dates: /c/santa-ana-college/schedule/spring-2027/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 |
| --- | --- | --- | --- | --- | --- | --- |
| 88187 | 88187 | Online anytime | Online, no set time | Jan 4–Jan 30 | Staff | 40 of 40 open |
| 91542 | 91542 | Online anytime | Online, no set time | Feb 8–Mar 7 | Christina M. Manzano King | 40 of 40 open |
| 91543 | 91543 | Online anytime | Online, no set time | Apr 12–Jun 5 | Christina M. Manzano King | 40 of 40 open |
| 91544 | 91544 | Online anytime | Online, no set time | Feb 8–Jun 5 | Aaron J. Roy | 40 of 40 open |
| 91551 | 91551 | In person, 1 Lecture | Mon/Wed 1:15–2:40pm, SC SC-308 | Feb 8–Jun 5 | Denyz A. Melchor | 40 of 40 open |
| 91553 | 91553 | In person, 1 Lecture | Tue/Thu 4:25–5:50pm, SC SC-208 | Feb 8–Jun 5 | David C. Murphy | 40 of 40 open |

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

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 88188 | 88188 | Online anytime | Online, no set time | Jan 4–Jan 30 | Staff | 40 of 40 open |
| 91546 | 91546 | Online anytime | Online, no set time | Feb 8–Apr 4 | Apostol Gramada | 40 of 40 open |
| 91549 | 91549 | Online anytime | Online, no set time | Apr 12–Jun 5 | Apostol Gramada | 40 of 40 open |
| 91550 | 91550 | Online anytime | Online, no set time | Feb 8–Jun 5 | Aaron J. Roy | 40 of 40 open |
| 91554 | 91554 | In person, 1 Lecture | Mon/Wed 2:50–4:15pm, SC SC-308 | Feb 8–Jun 5 | Denyz A. Melchor | 40 of 40 open |

## ASTR 140 — Astronomy Laboratory (1 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 91556 | 91556 | In person, 1 Laboratory | Tue 7:35–10:35pm, SC SC-312 | Feb 8–Jun 5 | Denyz A. Melchor | 36 of 36 open |