Paris Observatory Geodetic VLBI Center

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

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

Right ascension: 179.6074481300108°
Declination: 24.8383233662720°
No. sessions: 19
No. delays: 540
Defining: No
RMS(α cos δ) = 0.4280 mas
RMS(δ) = 0.7332 mas
Variability ellipse semimajor axis = 0.7332 mas
Variability ellipse semiminor axis = 0.4279 mas
Variability ellipse position angle = -0.9 deg
Equivalent α-δ correlation = -0.02

Observed in only 19 session(s)

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

Data

Right ascension: 179.6074481737006°
Declination: 24.8383232799589°
No. sessions: 18
No. delays: 537
Defining: No
RMS(α cos δ) = 0.2710 mas
RMS(δ) = 0.3404 mas
Variability ellipse semimajor axis = 0.3407 mas
Variability ellipse semiminor axis = 0.2707 mas
Variability ellipse position angle = 3.5 deg
Equivalent α-δ correlation = 0.03

Observed in only 18 session(s)