Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1221+809 (2025c, independent mode)

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

Right ascension: 185.9187232083523°
Declination: 80.6678723733683°
No. sessions: 174
No. delays: 12701
Defining: Yes
RMS(α cos δ) = 2.0163 mas
RMS(δ) = 1.8937 mas

Quarterly time series for 1221+809 (2025c, 4 global solutions)

Data

Right ascension: 185.9187239910063°
Declination: 80.6678723538986°
No. sessions: 164
No. delays: 12357
Defining: Yes
RMS(α cos δ) = 0.1292 mas
RMS(δ) = 0.1556 mas