<Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1221+509 (2026a, independent mode)

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

Right ascension: 185.9298704019127°
Declination: 50.6315035766147°
No. sessions: 5
No. delays: 528
Defining: No
RMS(α cos δ) = 6.7544 mas
RMS(δ) = 0.5510 mas

Observed in only 5 session(s)

Quarterly time series for 1221+509 (2026a, 4 global solutions)

Data

Right ascension: 185.9298715621158°
Declination: 50.6315035718900°
No. sessions: 5
No. delays: 528
Defining: No
RMS(α cos δ) = 0.1166 mas
RMS(δ) = 0.2599 mas

Observed in only 5 session(s)