Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1227+255 (2026b, independent mode)

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

Right ascension: 187.5587056376643°
Declination: 25.3019824733944°
No. sessions: 43
No. delays: 2604
Defining: Yes
RMS(α cos δ) = 7.8026 mas
RMS(δ) = 1.4624 mas
Variability ellipse semimajor axis = 7.8753 mas
Variability ellipse semiminor axis = 0.9994 mas
Variability ellipse position angle = -82.1 deg
Equivalent α-δ correlation = -0.72

Observed in only 43 session(s)

Quarterly time series for 1227+255 (2026b, 4 global solutions)

Data

Right ascension: 187.5587056308323°
Declination: 25.3019823061534°
No. sessions: 42
No. delays: 2601
Defining: Yes
RMS(α cos δ) = 0.1911 mas
RMS(δ) = 0.2366 mas
Variability ellipse semimajor axis = 0.2432 mas
Variability ellipse semiminor axis = 0.1826 mas
Variability ellipse position angle = -20.5 deg
Equivalent α-δ correlation = -0.19

Observed in only 42 session(s)