ivsopar.obspm.fr

Radio source coordinate time series

 

1639+230 Data SIMBAD - NED - LQAC MOJAVE - Astrogeo - BVID Aladin - SDSS

Right ascension: 250.3551148442212° Declination: 22.9511201870499° No. sessions: 368 No. delays: 13536 Defining: Yes RMS(α cos δ) = 0.3038 mas RMS(δ) = 0.2602 mas Cleaned No. sessions: 337 Cleaned RMS(α cos δ) = 0.1588 mas Cleaned RMS(δ) = 0.2126 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.