Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1221+809 (independent mode)

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

Right ascension: 185.9187237227595°
Declination: 80.6678723656968°
No. sessions: 132
No. delays: 9300
Defining: Yes
RMS(α cos δ) = 4.3087 mas
RMS(δ) = 3.5347 mas

Quarterly time series for 1221+809

Data - Demeaned data

Right ascension: 185.9187240104680°
Declination: 80.6678723343198°
No. sessions: 118
No. delays: 8519
Defining: Yes
RMS(α cos δ) = 0.1233 mas
RMS(δ) = 0.1430 mas