AAVSO Home



Welcome, Guest. You are not logged in.
Log in
    Revise    New Search
Latest Details
Log in to retrieve additional aliases from SIMBAD.
Name
  MRK 421  
AAVSO UID
000-BBR-960 (22778 observations)  
Constellation
Ursa Major Sequence
J2000.0
11 04 27.32 +38 12 31.8  (166.11383 +38.20883) Search nearby
B1950.0 11 01 40.67 +38 28 43.6
Proper motion
RA: -17.3 +/- 2.6 mas/yDec: -6.6 +/- 3.4 mas/ySource: UCAC4
Galactic coord. 179.832 +65.031
Other names

(Internal only)
1RXS J110427.1+381231 2MASS J11042730+3812318 BPS BS 16545-0024
BPS BS 16553-0057 CSS_J110427.4+381232 GSC 03010-00637
IOMC 3010000127 LEDA 33452 PG 1101+384
PG 1101+385 PKS 1101+384 QSO B1101+3828
QSO B1101+384 RGB J1104+382 RX J1104.4+3812
SDSS J110427.31+381231.7 UGC 6132  
(Not logged in)  Add name
Variability type
BLLAC
Spectral type DC composite
Mag. range
12.0 - 13.9 V
Discoverer --
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
There are currently no remarks on file for this star. (Not logged in)  Add remark
References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)
2012arXiv1210.0821A
2 Catalogue of Stellar Spectral Classifications (Skiff, 2009-2016) 1986ApJS...61..305G
External Links
Links open in a new window. Not all links may be valid for this particular target.
Location    Go   
Select a Location for more details.
Catalog Data
Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service. These data may not be complete.
2MASS J = 12.00H = 11.57K = 10.96J - K = 1.04
AllWISE W1 = 9.41W2 = 8.76W3 = 7.00W4 = 5.16W1 - W2 = 0.65W3 - W4 = 1.85
APASS-DR9 B = 12.88V = 12.50g' = 12.63r' = 12.38i' = 12.20B - V = 0.37
SDSS-DR12 u = 14.62g = 13.60r = 13.08i = 13.62z = 12.55u - g = 1.02r - i = -0.54
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Image not downloaded. Click Retrieve Image to download and view. Retrieve image
Supporting Documents
There are currently no supporting documents on file for this star. (Not logged in)  Add document
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
3 Admin, VSX 2017-12-15 09:34 UTC Spectral type from Skiff (VizieR on-line data: B/mk)
2 Otero, Sebastian Alberto 2014-10-20 22:17 UTC Range from AAVSO V data. UCAC4 position.
1 Admin, VSX 2008-12-16 21:55 UTC Preserved original object data.