| NGC | R.A. | Dec. | Size | Magnitude |
|---|
| 6027 | 15h 59m 10.5s | +20° 45' 39" | 0.4 x 0.2' | 14.7 |
| 6027A | 15h 59m 11.5s | +20° 45' 15" | 0.7 x 0.5' | 14.9 |
| 6027B | 15h 59m 14.8s | +20° 46' 00" | 0.4 x 0.3' | 15.3 |
| 6027C | 15h 59m 12.1s | +20° 44' 47" | 0.8 x 0.2' | 16.0 |
| 6027D | 15h 59m 13.2s | +20° 45' 33" | 0.1 x 0.1' | 15.3 |
| 6027E | 15h 59m 12.7s | +20° 45' 47" | 0.8 x 0.4' | 16.5 |
Around the tip of Serpent's head, this picture has captured a Hickson's compact galaxy group of HCG79.
The group has six small galaxies mainly NGC6027. All members have 15th or 16th magnitude in brightness and smaller than an arc minutes.
Generally we can calculate the distance to such a distant object by using of Hubble's law from its red shift that indicates regression velocity.
But in case of this HCG79, actually only a members of D has 5 times large regression velocity than that of other members.
It can be considered that the galaxy D is not a member of HCG79, but this fact is an example that we have doubts about universality of Hubble's law.
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