Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1805+220 (2026b, independent mode)

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

Right ascension: 271.9116922550115°
Declination: 22.0823364513786°
No. sessions: 5
No. delays: 396
Defining: No
RMS(α cos δ) = 0.2050 mas
RMS(δ) = 1.1383 mas
Variability ellipse semimajor axis = 1.1503 mas
Variability ellipse semiminor axis = 0.1206 mas
Variability ellipse position angle = -8.3 deg
Equivalent α-δ correlation = -0.80

Observed in only 5 session(s)

Quarterly time series for 1805+220 (2026b, 4 global solutions)

Data

Right ascension: 271.9116922348782°
Declination: 22.0823364925377°
No. sessions: 5
No. delays: 396
Defining: No
RMS(α cos δ) = 0.1570 mas
RMS(δ) = 0.3273 mas
Variability ellipse semimajor axis = 0.3500 mas
Variability ellipse semiminor axis = 0.0963 mas
Variability ellipse position angle = -21.6 deg
Equivalent α-δ correlation = -0.75

Observed in only 5 session(s)