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Radio source coordinate time series

 

 

1637+574

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

Right ascension: 249.5560678842858°
Declination: 57.3399941743184°
No. sessions: 331
No. delays: 10785
Defining: Yes
RMS(α cos δ) = 0.4951 mas
RMS(δ) = 0.6696 mas
Cleaned No. sessions: 314
Cleaned RMS(α cos δ) = 0.3425 mas
Cleaned RMS(δ) = 0.4769 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.