Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1637-771 (2026b, independent mode)

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

Right ascension: 251.0671678381511°
Declination: -77.2635591261084°
No. sessions: 5
No. delays: 47
Defining: No
RMS(α cos δ) = 1.0523 mas
RMS(δ) = 0.2771 mas
Variability ellipse semimajor axis = 1.0564 mas
Variability ellipse semiminor axis = 0.2610 mas
Variability ellipse position angle = -84.7 deg
Equivalent α-δ correlation = -0.33

Observed in only 5 session(s)

Quarterly time series for 1637-771 (2026b, 4 global solutions)

Data

Right ascension: 251.0671671319255°
Declination: -77.2635590552657°
No. sessions: 5
No. delays: 47
Defining: No
RMS(α cos δ) = 0.5496 mas
RMS(δ) = 0.6987 mas
Variability ellipse semimajor axis = 0.9108 mas
Variability ellipse semiminor axis = 0.1982 mas
Variability ellipse position angle = -38.8 deg
Equivalent α-δ correlation = -1.11

Observed in only 5 session(s)