Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 0657+172 (2026a, independent mode)

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

Right ascension: 105.0063569631464°
Declination: 17.1560279972928°
No. sessions: 714
No. delays: 47693
Defining: Yes
RMS(α cos δ) = 89.4864 mas
RMS(δ) = 82.1470 mas
Variability ellipse semimajor axis = 114.3247 mas
Variability ellipse semiminor axis = 41.0585 mas
Variability ellipse position angle = -48.1 deg
Equivalent α-δ correlation = -0.77

Quarterly time series for 0657+172 (2026a, 4 global solutions)

Data

Right ascension: 105.0063564174902°
Declination: 17.1560281481996°
No. sessions: 666
No. delays: 45842
Defining: Yes
RMS(α cos δ) = 0.1663 mas
RMS(δ) = 0.1704 mas
Variability ellipse semimajor axis = 0.1800 mas
Variability ellipse semiminor axis = 0.1559 mas
Variability ellipse position angle = -40.1 deg
Equivalent α-δ correlation = -0.14