ivsopar.obspm.fr

Radio source coordinate time series

 

 

1222+216

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

Observed in only 4 session(s)

Right ascension: 186.2269099781873°
Declination: 21.3795523245886°
No. sessions: 4
No. delays: 383
Defining: No
RMS(α cos δ) = 0.1754 mas
RMS(δ) = 0.3049 mas
Cleaned No. sessions: 3
Cleaned RMS(α cos δ) = 0.0745 mas
Cleaned RMS(δ) = 0.2196 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.