Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1851+488 (2026b, independent mode)

Data - BVID - NED - MOJAVE - SIMBAD - PanSTARRS-1

Right ascension: 283.1189804015092°
Declination: 48.9298494138526°
No. sessions: 216
No. delays: 6749
Defining: No
RMS(α cos δ) = 2579.8923 mas
RMS(δ) = 450.5511 mas
Variability ellipse semimajor axis = 2663.3814 mas
Variability ellipse semiminor axis = 484.5200 mas
Variability ellipse position angle = -75.8 deg
Equivalent α-δ correlation = -1.49

Quarterly time series for 1851+488 (2026b, 4 global solutions)

Data

Right ascension: 283.1189492261199°
Declination: 48.9298559153494°
No. sessions: 195
No. delays: 6681
Defining: No
RMS(α cos δ) = 0.1925 mas
RMS(δ) = 0.2074 mas
Variability ellipse semimajor axis = 0.2081 mas
Variability ellipse semiminor axis = 0.1918 mas
Variability ellipse position angle = 12.2 deg
Equivalent α-δ correlation = 0.03