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Radio source coordinate time series

 

 

0454+844

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

Right ascension: 77.1765146262572°
Declination: 84.5345957673125°
No. sessions: 354
No. delays: 9243
Defining: Yes
RMS(α cos δ) = 6.8474 mas
RMS(δ) = 4.7480 mas
Cleaned No. sessions: 281
Cleaned RMS(α cos δ) = 0.3476 mas
Cleaned RMS(δ) = 0.3823 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.