Based on a recessional velocity of 1625 km/sec, NGC 4750 is about 70 million light years away, in reasonable agreement with a redshift-independent distance estimate of 85 milion light years. Given that and its apparent size of 2.0 by 1.9 arcmins, the galaxy is about 45 thousand light years across.

The cluster contains just over a hundred stars, and is one of the youngest in the Milky Way, with an age of only 10 million years, so many of them are relatively hot blue giants (upper Main Sequence stars). However, its brightest star is the M-type supergiant κ Crucis, which is already at the end of its life, despite its youth. The cluster lies about 6400 light years away, and its 10 arcmin wide apparent size spans about 20 light years.

Per Dreyer, NGC 4759 is "pretty large, double, with a 10th-magnitude star 2 arcmin to the southwest". William Herschel's observation (the basis of Dreyer's description) was of the pair of galaxies, while his son John's description was of the separate members of the pair, hence the multiple listings. For a detailed discussion and images of the galaxies, see their separate entries.

(Note: A Wikisky search for NGC 4761 incorrectly shows NGC 4778 (correctly labeled as part of NGC 4759), and the actual NGC 4761 is incorrectly labeled as NGC 4764.

(Several listing mistakes noted for this object: (1) A Wikisky search for NGC 4764 shows NGC 4761, incorrectly labeled as NGC 4764, while the actual NGC 4764 is shown as PGC 43760; see the wide-field image at NGC 4776 for a correctly labeled view. (2) LEDA incorrectly lists NGC 4764 as identical to NGC 4778, and gives the PGC number for the incorrect galaxy.)

Based on a recessional velocity of 3560 km/sec, NGC 4776 is about 165 million light years away. Given that and its apparent size of 0.9 by 0.7 arcmin (estimated from the image below), it is about 45 thousand light years across. Due to their overlapping position, NGC 4776 is "paired" with NGC 4778, as NGC 4759; but given their recessional velocity difference of 700 km/sec, they should be around 35 million light years apart, and are almost certainly not a physical pair. (Note: LEDA, NED and Steinicke list NGC 4776 as being about 2 arcmin across, but as shown in the image below, it is less than half that size; the mistake is probably related to the errors noted for cross-identifications of NGC 4759, 4761, 4764, 4776 and 4778.)

Based on a recessional velocity of 4260 km/sec, NGC 4778 is about 200 million light years away. Given that and its apparent size of 0.7 by 0.5 arcmin, it is about 40 thousand light years across. Due to their overlapping position, NGC 4778 is "paired" with NGC 4776, as NGC 4759; but given their recessional velocity difference of 700 km/sec, they should be around 35 million light years apart, and are almost certainly not a physical pair. (Note: LEDA lists NGC 4778 as identical to NGC 4764, and to add to the confusion, assigns the PGC listing for NGC 4761; search for PGC 43757 to access the correct information.) (Note: LEDA and Steinicke list NGC 4778 as being about 1.7 arcmin across, but it is less than half that size; the mistake is probably related to the errors noted for cross-identifications of NGC 4759, 4761, 4764, 4776 and 4778.)

1.3 by 0.6 arcmin apparent size