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View Full Version : Object of the Week January 15, 2023 - NGC 2683 UFO Galaxy



deepskytraveler
January 16th, 2023, 01:38 AM
NGC 2683, MCG+06-20-011, UGC 4641, PGC 24930, UFO Galaxy
Type: Galaxy SA(rs)b
Constellation: Lynx
RA: 8h 52m 42s
DEC: +33° 25’ 18”
Mag(v): 9.8
Size: 8.4’ x 2.4’
SB: 12.9

Earlier this week the United States Office of the Director of National Intelligence (ODNI) published its 2022 Annual Report on Unidentified Aerial Phenomena [/URL](UAP). If the term UAP is not familiar to you, it is because these phenomena have traditionally been called Unidentified Flying Objects (UFO) for many decades. The unclassified 2022 version of the report adds 366 newly-identified UAP reports.

“Initial analysis and characterization of the newly-identified reports judged more than half as exhibiting unremarkable characteristics:

26 characterized as Unmanned Aircraft System (UAS) or UAS-like entities;
163 characterized as balloon or balloon-like entities; and
6 attributed to clutter e.g., birds, weather events, or airborne debris like plastic bags.”

Clearly more than half of the newly-identified reports have been attributed to terrestrial phenomena. Surprisingly none have been attributed to the planet Venus, which historically has been a source for many UFO reports. Without access to the classified version of the report we can only speculate on the “remaining uncharacterized and unattributed UAP reports.” However I dare to say, with a great degree of confidence, that none of these UAP reports will be attributed to this week’s Object of the Week, the UFO Galaxy. More commonly known as NGC 2683, this nearly edge-on 9th magnitude galaxy is located in the constellation Lynx.

Lynx is one of those constellations that doesn’t get a lot of attention. When you look towards Lynx you are looking out into deep space above the Perseus arm of our spiral galaxy. The constellation is well placed for viewing from the Northern hemisphere from early Winter to early Summer.

NGC 2683 was discovered by William Herschel with an 18.7-inch f/13 speculum telescope. His discovery observation of February 5, 1788, cataloged as H I-200, reads “Very brilliant, much extended in a direction south preceding to north following, 8’ length, 3’ breadth, beautiful.”

The NGC catalog describes this galaxy as “Very bright, very large, very much extended toward position angle 39°, gradually much brighter in the middle.”

Staff at the Astronaut Memorial Planetarium and Observatory, nicknamed NGC 2683 the UFO Galaxy because its visual appearance is reminiscent of the silver saucer so commonly reported by UFO enthusiasts and portrayed in sci-fi films.

George Kepple and Glen Sanner, in their seminal work The Night Sky Observer’s Guide (Volume 1 Autumn and Winter) provide a progression of aperture-based observations for NGC 2683.


8/10” Scopes-100x: This fine, bright, edge-on galaxy has a highly elongated 7’ x 1.5’ NE-SW halo with a slightly brighter highly extended core. 10’ south of the galaxy is a parallelogram of 10th to 11th magnitude stars, and a 12th magnitude star is 2.5’ east.
12/14” Scopes-125x: This beautiful object is elongated 8’ x 1.5 NE-SW with a mottled halo and hints of a dust lane that extends for nearly half the length of the major axis. The center appears moderately brighter, and the tips fade rapidly.
16-18” Scopes-150x: Impressive! This relatively high surface brightness galaxy covers a generous portion of the field of view. Its 9’ x 1.5’ NE-SW image is considerably mottled, and several bright knots are scattered along its major axis. A small irregular dust lane runs just NE of the center. SE of the center bulges a crescent-shaped nucleus. A 14th magnitude star lies just beyond the NE tip, and a 13th magnitude star nearly touches the halo 2.25’NNE of the center.


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UFO Galaxy (NGC 2683)
Click image for larger version. This galaxy may or may not be a barred spiral. There is evidence supporting a classical spiral as well as a barred spiral.
This work by Tom Haugh is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. Based on a work at www.ptobservatory.com (http://www.ptobservatory.com).

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Hale Observatory

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SDSS (annotated)

This galaxy is a wonderful sight that should not be missed, especially for those with moderate-to-large sized telescopes. So the next time you are out, be sure that the UFO Galaxy is on your observing list. As always,

“Give it a go and let us know!”

1 2022 Annual Report on Unidentified Aerial Phenomena (https://www.dni.gov/files/ODNI/documents/assessments/Unclassified-2022-Annual-Report-UAP.pdf)

Raul Leon
January 16th, 2023, 02:35 AM
Hi, here's my observation from 3/17/2018: ngc 2683 galaxy in Lynx; magnitude:9.8 ; size:8.4' x 2.4' ; bright, elongated with mottled halo ; fairly large, brightens towards center, the ends of this galaxy fade rapidly. I used a 10mm Radian at 198x with my 14.5 Starstructure f/4.35005

lamperti
January 16th, 2023, 12:57 PM
From 1998 with a 10" at 86x: "Nice edge on galaxy with a bright nucleus and a central bulge."

wvreeven
January 16th, 2023, 01:57 PM
With my 20": at 151x a beautiful, large, oval glow. A bright central region with an arc around it embedded in a large oval glow. At 325x I occasionally see a stellar nucleus. To the south west lie two stars with a glow next to it. That's PGC 2030408.

Robin
January 22nd, 2023, 11:05 AM
I observed it in April 2020 with my 12" Dobson at 275x magnification and noted that I was able to comprehend why it is called "UFO galaxy". Bright, elongated center, relatively sharp brightness transition at the NW side and relatively diffuse at the SW side. Please find attached by sketch.

Gautham Ramachandra
January 25th, 2023, 05:17 PM
Was introduced to this forum by Akarsh and this was my first time observing NGC 2683 UFO Galaxy with my newly acquired 8" dob under Bortle 3 skies and my initial attempt at logging and sketching objects. Here's my log-

Spiral galaxy in constellation Lynx - visible like a thin line, with a bright, fat centre, giving a side view of the galaxy.
Observed on 01/23/2023 with 8" Newtonian telescope, 133x magnification.

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Uwe Glahn
January 27th, 2023, 03:54 PM
I observed this beauty up from 8-inch but add my 27-inch sketch beneath.

sketch: 27", 293x-419x, NELM 6m5+, Seeing II-III
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home (http://www.deepsky-visuell.de/Zeichnungen/NGC2683.htm)

Don Pensack
January 30th, 2023, 01:34 PM
From my notes with a 12.5":
bright, long spindle-oval, core offset from center, one end longer, almost edge-on spiral, superimposed stars toward one end, nearby faint stars surround the galaxy, best view at 203x.