Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1817+387 (2026b, independent mode)

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

Right ascension: 274.8606141518906°
Declination: 38.7504961830721°
No. sessions: 6
No. delays: 579
Defining: No
RMS(α cos δ) = 1.9137 mas
RMS(δ) = 1.3517 mas
Variability ellipse semimajor axis = 2.3116 mas
Variability ellipse semiminor axis = 0.3821 mas
Variability ellipse position angle = -55.3 deg
Equivalent α-δ correlation = -0.94

Observed in only 6 session(s)

Quarterly time series for 1817+387 (2026b, 4 global solutions)

Data

Right ascension: 274.8606139982933°
Declination: 38.7504961430363°
No. sessions: 6
No. delays: 579
Defining: No
RMS(α cos δ) = 0.1006 mas
RMS(δ) = 0.1394 mas
Variability ellipse semimajor axis = 0.1405 mas
Variability ellipse semiminor axis = 0.0991 mas
Variability ellipse position angle = -9.9 deg
Equivalent α-δ correlation = -0.12

Observed in only 6 session(s)