Registry · deep sky

NGC 4840

LINER SIMBAD LIN 115 papers

harvesting The full record is being pulled from the archives right now — measurement tables, the Gaia row, catalogue photometry. This page will fill itself in.

Right ascension: 12h 57m 32.84s
Declination: +27° 36′ 37.2″
Galactic l, b: 52.849, 88.56
Redshift z: 0.02013
Radial velocity: 5,974.1 km/s
Angular size: 0.8104′ × 0.7359′

Also known as

33 identifiers

2CXO J125732.8+2736372MASX J12573284+27363682XMM J125732.9+2736373XMM J125732.8+273636AGC 221175[BO85] ACO 1656 20[BO85] Coma 20CAIRNS J125732.86+273636.6[D80] ACO 1656 46DELS 8000483713004370ECO 3782FOCA 0728-758Gaia DR2 1463681565502283008Gaia DR3 1463681565502283008GMP 4829GP 856LEDA 44324MPMM 203NGC 4840NGP9 F323-1040116SDSS J125732.83+273637.2UZC J125732.9+273637WISEA J125732.83+273637.1Z 1255.1+2753Z 160-42[CHM2007] HDC 745 J125732.84+2736368[CHM2007] LDC 926 J125732.84+2736368[CNM2001] 218[CRS93] SW 35[DFO95] 178[FBH2004] X473[HHM2010] 194.38682+27.61035MCG+05-31-029

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
SDSS J125729.21+273631.1	Galaxy	48.6″	19.45
2MASX J12573942+2736213	GtowardsCl	88.74″	—
LEDA 126862	GtowardsCl	104″	—
LEDA 126872	GtowardsCl	117.1″	16.67
2MASX J12574311+2736283	Seyfert2	136.4″	—
2MASX J12574288+2737163	GtowardsCl	138.9″	—
LEDA 126877	GtowardsCl	176.5″	16.82
LEDA 126855	GtowardsCl	181.6″	—
LEDA 126874	GtowardsCl	197.8″	17.01
2MASX J12571682+2737068	LINER	215.3″	—
2MASX J12573058+2732348	GtowardsCl	244.1″	17.03

Provenance

where this card came from

Archive	Read at (UTC)	Record
Seeded from the bulk archive load; no per-object fetch yet.

Machine-readable: /api/v1/object/ngc-4840 · Registry entry updated 2026-08-14.