ivsopar.obspm.fr

Radio source coordinate time series

 

 

1647+744

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

Observed in only 3 session(s)

Right ascension: 251.5632893149618°
Declination: 74.3197409765736°
No. sessions: 3
No. delays: 14
Defining: No
RMS(α cos δ) = 129.7668 mas
RMS(δ) = 78.2256 mas
Cleaned No. sessions: 0
Cleaned RMS(α cos δ) = -100.0000 mas
Cleaned RMS(δ) = -100.0000 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.