Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1638+540 (2025b, independent mode)

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

Right ascension: 249.9160126949500°
Declination: 53.9630883331155°
No. sessions: 6
No. delays: 562
Defining: No
RMS(α cos δ) = 0.4628 mas
RMS(δ) = 0.3461 mas

Observed in only 6 session(s)

Quarterly time series (2025b, 4 global solutions) for 1638+540

Data

Right ascension: 249.9160127029971°
Declination: 53.9630883480717°
No. sessions: 6
No. delays: 562
Defining: No
RMS(α cos δ) = 0.2083 mas
RMS(δ) = 0.2081 mas

Observed in only 6 session(s)