<Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1221+809 (2026a, independent mode)

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

Right ascension: 185.9187232360599°
Declination: 80.6678723671249°
No. sessions: 173
No. delays: 12878
Defining: Yes
RMS(α cos δ) = 1.9452 mas
RMS(δ) = 1.8260 mas

Quarterly time series for 1221+809 (2026a, 4 global solutions)

Data

Right ascension: 185.9187239878266°
Declination: 80.6678723551831°
No. sessions: 166
No. delays: 12465
Defining: Yes
RMS(α cos δ) = 0.1271 mas
RMS(δ) = 0.1490 mas