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: 271.7111693954580°
Declination: 69.8244745989720°
No. sessions: 1627
No. delays: 214636
Defining: No
RMS(α cos δ) = 132.8520 mas
RMS(δ) = 59.4916 mas
Variability ellipse semimajor axis = 137.8011 mas
Variability ellipse semiminor axis = 46.9016 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