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Radio source coordinate time series

 

 

0642+449

Data
SIMBAD - NED - LQAC
MOJAVE - Astrogeo - BVID
Aladin - SDSS

Right ascension: 101.6334416579007°
Declination: 44.8546083784198°
No. sessions: 1530
No. delays: 161006
Defining: Yes
RMS(α cos δ) = 1.7287 mas
RMS(δ) = 0.8223 mas
Cleaned No. sessions: 1388
Cleaned RMS(α cos δ) = 0.1913 mas
Cleaned RMS(δ) = 0.2565 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.