Nebulae of Monoceros - March 2023

By: The Editors of Sky & Telescope December 1, 2022 0

The March 2023 issue of Sky & Telescope ran an article by Richard P. Wilds on the nebulae of southern Monoceros. If you read it, you'll have seen that it featured labeled images that serve as finder charts. Here you'll find the table of data of the objects discussed in the article.

Dark and Bright Clouds in Monoceros

Object	Alternative Name	Type	Size	RA	Dec.
NGC 2149		Reflection nebula	3′ × 2′	06^h 03.5^m	–09° 44′
LDN 1644	—	Dark cloud	25′	06^h 07.7^m	–05° 30′
LDN 1645	—	Dark cloud	14′ × 14′	06^h 06.9^m	–05° 40′
LDN 1646	—	Dark cloud	106′ × 106′	06^h 07.4^m	–06° 00′
NGC 2170	LBN 994	Reflection nebula	2′ × 2′	06^h 07.5^m	–06° 24′
vdB 69	—	Reflection nebula	2′ × 2′	06^h 08.1^m	–06° 22′
vdB 68	—	Reflection nebula	4′ × 3′	06^h 08.1^m	–06° 14′
NGC 2182	LBN 998	Reflection nebula	2.5′ × 2.5′	06^h 09.5^m	–06° 20′
NGC 2183	LBN 996	H II / Reflection	1′ × 1′	06^h 10.8^m	–06° 13′
NGC 2185	LBN 997	Reflection nebula	1.5′ × 1.5′	06^h 11.1^m	–06° 13′
HH 271-273	—	Herbig-Haro objects	—	06^h 12.8^m	–06° 13′
Dobashi 1493	—	Dark clouds	3.9° × 3.0°	06^h 07.8^m	–07° 01′
vdB 80	—	Reflection nebula	5′ × 3′	06^h 31.8^m	–09° 40′
NGC 2316	Parsamian 18	Cluster / Nebula	4′ × 3′	06^h 59.7^m	–07° 46′
LDN 1653-54	—	Dark clouds	68′ × 62′	06^h 58.6^m	–07° 44′
NGC 2313	Parsamian 67	Emission nebula	—	06^h 58.0^m	–07° 57′
DG 113	LBN 1022	Reflection nebula	—	06^h 56.0^m	–08° 18′
LDN 1655-56	—	Dark clouds	63′ × 51′	06^h 56.7^m	–08° 28′
Sh 2-291	LBN 1020	H II region	9.4′ × 9.4′	06^h 55.4^m	–08° 00′
vdB 87	—	Reflection nebula	1.4′	07^h 00.5^m	–08° 52′
Sh 2-287	LBN 1012	Diffuse nebula	12′	06^h 59.5^m	–04° 49′
LDN 1650	—	Dark cloud	8′ × 8′	06^h 59.5^m	–04° 54′
HH 227	—	Herbig-Haro object	—	06^h 59.6^m	–04° 46′
IC 466	Min 2-63	H II region	1′ × 1′	07^h 08.6^m	–04° 19′
IC 2177	—	Reflection nebula	120′ × 40′	07^h 05.3^m	–10° 38′
vdB 88	LBN 1030	Reflection nebula	6.5′	07^h 01.8^m	–11° 18′
NGC 2327	Ced 89b	Reflection nebula	1.5′ × 1.5′	07^h 04.3^m	–11° 18′
Sh 2-292	vdB 93	H II / Reflection	21′	07^h 04.4^m	–10° 27′
vdB 90	Parsamian Petrosian 70	Reflection nebula	4′	07^h 02.7^m	–11° 27′
vdB 92	Ced 89a	Reflection nebula	2′	07^h 03.9^m	–11° 34′
LDN 1657	—	Dark cloud	62′ × 62′	07^h 04.1^m	–10° 27′
LDN 1658	—	Dark cloud	30′ × 15′	07^h 14.4^m	–11° 05′

Angular sizes and separations are from recent catalogs. Visually, an object’s size is often smaller than the cataloged value and varies according to the aperture and magnification of the viewing instrument. Right ascension and declination are for equinox 2000.0.

You can dip into several catalogs referred to in the table above.

LDN = Lynds Dark Nebulae. You'll find the original catalog in the 1962 article by Beverly T. Lynds.

LBN = Lynds Bright Nebulae. The original catalog is in a 1965 article by Beverly T. Lynds.

Doabshi. You'll find the two original Kazuhito Dobashi et al. articles in a 2005 journal paper as well as a 2013 journal paper.

vdB = van den Bergh. Sydney van den Bergh published his catalog of reflection nebulae in a 1966 journal paper.

Sh = Sharpless. Stewart Sharpless compiled a second catalog of H II regions in a 1959 journal article.