Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1155+251 (2026a, independent mode)

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

Right ascension: 179.6074481412226°
Declination: 24.8383233539123°
No. sessions: 19
No. delays: 540
Defining: No
RMS(α cos δ) = 0.4673 mas
RMS(δ) = 0.7987 mas
Variability ellipse semimajor axis = 0.7988 mas
Variability ellipse semiminor axis = 0.4672 mas
Variability ellipse position angle = -1.0 deg
Equivalent α-δ correlation = -0.02

Observed in only 19 session(s)

Quarterly time series for 1155+251 (2026a, 4 global solutions)

Data

Right ascension: 179.6074481686062°
Declination: 24.8383232795189°
No. sessions: 18
No. delays: 537
Defining: No
RMS(α cos δ) = 0.2750 mas
RMS(δ) = 0.3338 mas
Variability ellipse semimajor axis = 0.3342 mas
Variability ellipse semiminor axis = 0.2745 mas
Variability ellipse position angle = 5.2 deg
Equivalent α-δ correlation = 0.04

Observed in only 18 session(s)