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Radio source coordinate time series

 

 

1642+690

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

Right ascension: 250.5327021072102°
Declination: 68.9443767740225°
No. sessions: 234
No. delays: 18117
Defining: Yes
RMS(α cos δ) = 0.4374 mas
RMS(δ) = 0.6031 mas
Cleaned No. sessions: 191
Cleaned RMS(α cos δ) = 0.2851 mas
Cleaned RMS(δ) = 0.2857 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.