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Radio source coordinate time series

 

1638+398 Data SIMBAD - NED - LQAC MOJAVE - Astrogeo - BVID Aladin - SDSS

Right ascension: 250.1234698831212° Declination: 39.7794523160354° No. sessions: 1531 No. delays: 126637 Defining: Yes RMS(α cos δ) = 1.1501 mas RMS(δ) = 1.3685 mas Cleaned No. sessions: 1408 Cleaned RMS(α cos δ) = 0.1111 mas Cleaned RMS(δ) = 0.1351 mas

Note: Cleaning is a simple outlier elimination algorithm to remove bad sessions. Points whose distance to the mean scaled by the error is larger than 3 are iteratively deleted. The cleaned rms are provided as is and should be taken with some care, especially if the number of sessions is small.