Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1807+698 (2026b, independent mode)

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

Right ascension: 271.7111779382138°
Declination: 69.8244741293683°
No. sessions: 1620
No. delays: 214031
Defining: No
RMS(α cos δ) = 132.9907 mas
RMS(δ) = 59.5438 mas
Variability ellipse semimajor axis = 137.9426 mas
Variability ellipse semiminor axis = 46.9452 mas
Variability ellipse position angle = -73.5 deg
Equivalent α-δ correlation = -0.58

Quarterly time series for 1807+698 (2026b, 4 global solutions)

Data

Right ascension: 271.7111694431797°
Declination: 69.8244745807950°
No. sessions: 1601
No. delays: 213379
Defining: No
RMS(α cos δ) = 0.1384 mas
RMS(δ) = 0.1010 mas
Variability ellipse semimajor axis = 0.1403 mas
Variability ellipse semiminor axis = 0.0983 mas
Variability ellipse position angle = 76.6 deg
Equivalent α-δ correlation = 0.16