Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1657+054 (2026b, independent mode)

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

Right ascension: 255.0998164666904°
Declination: 5.3789155405593°
No. sessions: 5
No. delays: 530
Defining: No
RMS(α cos δ) = 1.4677 mas
RMS(δ) = 0.3695 mas
Variability ellipse semimajor axis = 1.4788 mas
Variability ellipse semiminor axis = 0.3220 mas
Variability ellipse position angle = -82.7 deg
Equivalent α-δ correlation = -0.48

Observed in only 5 session(s)

Quarterly time series for 1657+054 (2026b, 4 global solutions)

Data

Right ascension: 255.0998166416845°
Declination: 5.3789153292873°
No. sessions: 5
No. delays: 530
Defining: No
RMS(α cos δ) = 0.0569 mas
RMS(δ) = 0.2571 mas
Variability ellipse semimajor axis = 0.2579 mas
Variability ellipse semiminor axis = 0.0531 mas
Variability ellipse position angle = -4.6 deg
Equivalent α-δ correlation = -0.35

Observed in only 5 session(s)