Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1657-261 (2026b, independent mode)

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

Right ascension: 255.2214752526250°
Declination: -26.1810348286670°
No. sessions: 1291
No. delays: 46000
Defining: Yes
RMS(α cos δ) = 42927.1030 mas
RMS(δ) = 13392.5656 mas
Variability ellipse semimajor axis = 45588.6505 mas
Variability ellipse semiminor axis = 7498.5375 mas
Variability ellipse position angle = -70.5 deg
Equivalent α-δ correlation = -1.16

Quarterly time series for 1657-261 (2026b, 4 global solutions)

Data

Right ascension: 255.2214752674327°
Declination: -26.1810348333783°
No. sessions: 1210
No. delays: 45491
Defining: Yes
RMS(α cos δ) = 0.2963 mas
RMS(δ) = 0.2975 mas
Variability ellipse semimajor axis = 0.3224 mas
Variability ellipse semiminor axis = 0.2690 mas
Variability ellipse position angle = -44.3 deg
Equivalent α-δ correlation = -0.18