Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1657+022 (2026b, independent mode)

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

Right ascension: 254.9374886402729°
Declination: 2.2186233787355°
No. sessions: 5
No. delays: 444
Defining: No
RMS(α cos δ) = 0.6332 mas
RMS(δ) = 1.6231 mas
Variability ellipse semimajor axis = 1.7216 mas
Variability ellipse semiminor axis = 0.2676 mas
Variability ellipse position angle = 19.7 deg
Equivalent α-δ correlation = 0.89

Observed in only 5 session(s)

Quarterly time series for 1657+022 (2026b, 4 global solutions)

Data

Right ascension: 254.9374886334587°
Declination: 2.2186232898320°
No. sessions: 5
No. delays: 444
Defining: No
RMS(α cos δ) = 0.1133 mas
RMS(δ) = 0.3147 mas
Variability ellipse semimajor axis = 0.3261 mas
Variability ellipse semiminor axis = 0.0742 mas
Variability ellipse position angle = -15.6 deg
Equivalent α-δ correlation = -0.73

Observed in only 5 session(s)