AVA AGN Variability Archive

Mrk 142

Simbad | NED | Bentz DB

RA (h:m:s)    DEC (d:m:s)       RA (deg)     DEC (deg):
10:25:31.28   +51:40:34.86       156.38033      51.67635

Basic Information

Redshift 0.044586
E(B-V) 0.017 Schlafly & Finkbeiner (2011)
Black Hole Mass 6.29 M Bentz & Katz (2015)
log(L5100) 43.54 erg/s Bentz & Katz (2015)
log(LBol) 44.83 erg/s kbol=19.68, Netzer (2019)
LEdd 2.692 (caution)
Lag u-g 0.30 days (theoretical)
Lag u-zs 0.93 days (theoretical)

Photometric Data Summary

Facility Cadence
(days)
Start
(MJD)
End
(MJD)
Swift 0.53 2019-01-01 2019-04-29
LCO 1.86 2018-12-15 2023-06-09

Data Citation

  • Cackett et al 2020, ApJ, 896, 1

  • Please use this reference if you use the this object data.

    Photometric Light curves


    Photometry breakdown

    • LCO B V u g r i z -- --
      #Epochs 198 202 645 1204 1178 1150 1127 -- --
      Mean Mag (AB)
      Last 10 days
      16.37 15.97 16.57 16.14 15.74 15.49 15.46 -- --
    • Swift X-rays UVW2 UVM2 UVW1 U B V -- --
      #Epochs 181 140 129 139 141 162 158 -- --
      Mean Mag (AB)
      Last 10 days
      0.00 51.91 52.15 52.33 52.68 53.07 53.28 -- --