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Radio source coordinate time series

 

 

1901+319

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

Right ascension: 285.7330787473044°
Declination: 31.9949171436301°
No. sessions: 54
No. delays: 2571
Defining: No
RMS(α cos δ) = 0.4479 mas
RMS(δ) = 0.4086 mas
Cleaned No. sessions: 44
Cleaned RMS(α cos δ) = 0.2922 mas
Cleaned RMS(δ) = 0.3750 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.