Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1231+481 (2026b, independent mode)

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

Right ascension: 188.5555450122174°
Declination: 47.8975658590484°
No. sessions: 5
No. delays: 484
Defining: No
RMS(α cos δ) = 0.1665 mas
RMS(δ) = 0.5326 mas
Variability ellipse semimajor axis = 0.5516 mas
Variability ellipse semiminor axis = 0.0842 mas
Variability ellipse position angle = 15.2 deg
Equivalent α-δ correlation = 0.85

Observed in only 5 session(s)

Quarterly time series for 1231+481 (2026b, 4 global solutions)

Data

Right ascension: 188.5555449585190°
Declination: 47.8975658044055°
No. sessions: 5
No. delays: 484
Defining: No
RMS(α cos δ) = 0.0614 mas
RMS(δ) = 0.2437 mas
Variability ellipse semimajor axis = 0.2450 mas
Variability ellipse semiminor axis = 0.0557 mas
Variability ellipse position angle = 6.2 deg
Equivalent α-δ correlation = 0.41

Observed in only 5 session(s)