IC 4638
| Galaxie IC 4638 | |
|---|---|
| SDSS-Aufnahme | |
| AladinLite | |
| Sternbild | Herkules |
| Position Äquinoktium: J2000.0, Epoche: J2000.0 | |
| Rektaszension | 17h 01m 13,695s [1] |
| Deklination | +33° 30′ 47,47″ [1] |
| Erscheinungsbild | |
| Morphologischer Typ | E0[1] |
| Helligkeit (visuell) | 14,9 mag[2] |
| Helligkeit (B-Band) | 15,6 mag[2] |
| Winkelausdehnung | 0,56' × 0,43'[2] |
| Flächenhelligkeit | 14,3 mag/arcmin²[2] |
| Physikalische Daten | |
| Rotverschiebung | 0.037424 ± 0.000011[1] |
| Radialgeschwindigkeit | (11219 ± 3) km/s[1] |
| Hubbledistanz H0 = 73 km/(s • Mpc) |
(508 ± 36)e6 Lj (155,9 ± 10,9) Mpc [1] |
| Durchmesser | 75.000 Lj[3] |
| Geschichte | |
| Entdeckung | Sherburne W. Burnham |
| Entdeckungsdatum | 15. April 1899 |
| Katalogbezeichnungen | |
| IC 4638 • PGC 59446 • CGCG 197-026 • MCG +06-37-021 • 2MASX J17011365+3330478 • 2MASS J17011369+3330475 • NSA 38899 • SDSS J170113.69+333047.4 • WISEA J170113.69+333047.5 | |
IC 4638 ist eine elliptische Galaxie vom Hubble-Typ E0 im Sternbild Herkules am Nordsternhimmel. Sie ist schätzungsweise 58 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 120.000 Lichtjahren.
Das Objekt wurde am 15. April 1899 von Sherburne Wesley Burnham entdeckt.[4]
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