NGC 3998

Query : NGC 3998

Basic data :
NGC 3998 -- Seyfert 2 Galaxy
Other object types: otypes_help 		LIN (), X (2012ApJS,1AXG,...), Rad (BWE,6C,...), G (2015ApJS,LEDA,...), AGN (2008ApJS,CGRaBS,...), Sy1 (2012ApJ), QSO (QSO,[WTW94]), Sy2 (2022ApJS), SyG (2009ApJ), rG (2019ApJ), Bz? ([SRM2005]), GiP ([T76]), GiG ([CHM2007]), AG? (2020MNRAS), * (Gaia), gam (INTREF), NIR (2MASS), MIR (WISE), IR (IRAS), Opt (SDSS)
ICRS coord. (ep=J2000) : 		11 57 56.1334044408 +55 27 12.922443432 (Optical) [ 0.0710 0.0744 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		11 55 20.9516094958 +55 43 54.767883798 [ 0.0710 0.0744 90 ]
Gal coord. (ep=J2000) : 		138.1723349878691 +60.0633488382720 [ 0.0710 0.0744 90 ]
Proper motions mas/yr : 		0.049 0.136 [0.093 0.101 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 1070 [150] / z(emission) 0.00357417 [0.0005] / cz 1071.5092 [150]
   (Opt) C 2022ApJS..261....2K
Parallaxes (mas): 		0.0799 [0.1014] A 2020yCat.1350....0G
Morphological type: 		SA C 2019MNRAS.488..590B
Angular size (arcmin): 		3.10482 2.47113 136 (Opt) B 2023ApJS..269....3M
Fluxes (12) :
B 11.64 [0.02] C 2016MNRAS.460..689R
V 12.10 [~] D 2010A&A...518A..10V
R 10.09 [0.02] C 2016MNRAS.460..689R
G 15.549679 [0.004629] C 2020yCat.1350....0G
J 8.327 [0.007] C 2006AJ....131.1163S
H 7.584 [0.008] C 2006AJ....131.1163S
K 7.365 [0.010] C 2006AJ....131.1163S
u (AB) 15.09 [0.01] D 2009ApJS..182..543A
g (AB) 11.2141 [0.0027] B 2023ApJS..269....3M
r (AB) 10.4566 [0.0014] B 2023ApJS..269....3M
i (AB) 13.604 [0.007] C 2009ApJS..182..543A
z (AB) 9.9870 [0.0006] B 2023ApJS..269....3M
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 8 : 162 Display criteria :

Identifiers (65) :
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NGC 3998 LEDA 37642 UGC 6946 [RW2000] NGC 3998 X-2
1AXG J115757+5527 2MASS J11575612+5527128 UZC J115756.2+552713 [SMM2006b] J115756.13+552713.0
BWE 1155+5543 2MASX J11575616+5527128 WB 1155+5543 [SRM2005] J115756.13+552712.9
6C 115520+554340 MCG+09-20-046 WISE J115756.15+552713.0 [T76] 47B
7C 115520.50+554349.00 NVSS J115756+552712 WN B1155.3+5543 [VV2000c] J115756.1+552713
CGRaBS J1157+5527 PBC J1158.1+5527 2XMM J115756.1+552714 [VV2003c] J115756.1+552713
2E 2561 QSO B1155+557 XSS J11570+5514 [VV2006c] J115756.1+552713
2E 1155.3+5543 RBS 1053 Z 269-25 [VV2010c] J115756.1+552713
1ES 1155+55.7 RGB J1157+554 Z 1155.3+5543 [VV98c] J115756.1+552713
FIRST J115756.1+552713 RX J1157.9+5527 [BAG2012] 179.5145+55.4250 [WTW94] 1155+557
GB6 B1155+5543 1RXS J115756.1+552717 [CAB95] IRAS F11553+5543 [ZEH2003] RX J1157.9+5527 1
87GB 115521.8+554353 SDSS J115756.13+552713.0 [CHM2007] LDC 867 J115756.16+5527128 EQ 1155+557
ILT J115755.83+552710.8 SRGA J115755.3+552721 [CHM2007] HDC 706 J115756.16+5527128 Gaia DR3 841020502831092352
INTREF 470 SWIFT J1157.8+5529 [HSN2016] J179.48+55.45 Gaia DR2 841020502831092352
IRAS 11553+5543 SWIFT J1158.0+5526 [LB2005] NGC 3998 X1
IRAS F11553+5543 SWIFT J1158.1+5526 [M98c] 115521.4+554357
IVS B1155+557 TIC 55684273 [R97] NGC 3998 9

References (682 between 1850 and 2026) (Total 682)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 16    Distance : 7    Plx : 1    PM : 1   

   

Observing logs
Herschel : 5    ISO : 5    IUE : 14    XMM : 1   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : NGC 3998

Link by name to the catalogue in VizieR :

NGC 3998 BWE 1155+5543 2E 2561 FIRST J115756.1+552713 IRAS 11553+5543
IRAS F11553+5543 2MASS J11575612+5527128 2MASX J11575616+5527128 NVSS J115756+552712 1RXS J115756.1+552717
SDSS J115756.13+552713.0 UGC 6946 WISE J115756.15+552713.0 WN B1155.3+5543 Gaia DR3 841020502831092352
Gaia DR2 841020502831092352

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