<Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1642+690 (2026a, independent mode)

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

Right ascension: 250.5327021756643°
Declination: 68.9443767789566°
No. sessions: 278
No. delays: 25304
Defining: Yes
RMS(α cos δ) = 3.1926 mas
RMS(δ) = 2.1447 mas

Quarterly time series for 1642+690 (2026a, 4 global solutions)

Data

Right ascension: 250.5327022015745°
Declination: 68.9443767758467°
No. sessions: 248
No. delays: 22757
Defining: Yes
RMS(α cos δ) = 0.1443 mas
RMS(δ) = 0.2088 mas