ivsopar.obspm.fr

Radio source coordinate time series

 

 

2201+171

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

Observed in only 6 session(s)

Right ascension: 330.8620568198258°
Declination: 17.4300688441138°
No. sessions: 6
No. delays: 284
Defining: No
RMS(α cos δ) = 1.6012 mas
RMS(δ) = 0.5934 mas
Cleaned No. sessions: 3
Cleaned RMS(α cos δ) = 0.2961 mas
Cleaned RMS(δ) = 0.3395 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.