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Radio source coordinate time series

 

 

1807+698

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

Right ascension: 271.7111694957125°
Declination: 69.8244747358710°
No. sessions: 1244
No. delays: 141123
Defining: No
RMS(α cos δ) = 72.5982 mas
RMS(δ) = 250.4558 mas
Cleaned No. sessions: 763
Cleaned RMS(α cos δ) = 0.2293 mas
Cleaned RMS(δ) = 0.2169 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.