Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1258+287 (2026b, independent mode)

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

Right ascension: 195.1188749653335°
Declination: 28.5028301970140°
No. sessions: 8
No. delays: 604
Defining: No
RMS(α cos δ) = 0.5740 mas
RMS(δ) = 0.4798 mas
Variability ellipse semimajor axis = 0.6122 mas
Variability ellipse semiminor axis = 0.4300 mas
Variability ellipse position angle = 60.7 deg
Equivalent α-δ correlation = 0.29

Observed in only 8 session(s)

Quarterly time series for 1258+287 (2026b, 4 global solutions)

Data

Right ascension: 195.1188749728510°
Declination: 28.5028302262123°
No. sessions: 8
No. delays: 604
Defining: No
RMS(α cos δ) = 0.3683 mas
RMS(δ) = 0.1774 mas
Variability ellipse semimajor axis = 0.3709 mas
Variability ellipse semiminor axis = 0.1719 mas
Variability ellipse position angle = 82.3 deg
Equivalent α-δ correlation = 0.22

Observed in only 8 session(s)