Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1817+502 (2026b, independent mode)

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

Right ascension: 274.6271634759148°
Declination: 50.2888177183248°
No. sessions: 5
No. delays: 392
Defining: No
RMS(α cos δ) = 0.2341 mas
RMS(δ) = 0.4714 mas
Variability ellipse semimajor axis = 0.4754 mas
Variability ellipse semiminor axis = 0.2258 mas
Variability ellipse position angle = 8.5 deg
Equivalent α-δ correlation = 0.23

Observed in only 5 session(s)

Quarterly time series for 1817+502 (2026b, 4 global solutions)

Data

Right ascension: 274.6271635371681°
Declination: 50.2888177282340°
No. sessions: 5
No. delays: 392
Defining: No
RMS(α cos δ) = 0.1426 mas
RMS(δ) = 0.1584 mas
Variability ellipse semimajor axis = 0.2068 mas
Variability ellipse semiminor axis = 0.0513 mas
Variability ellipse position angle = -41.5 deg
Equivalent α-δ correlation = -0.88

Observed in only 5 session(s)