| Number of entries |
118218 |
| Entries with associated astrometry |
117955 |
| Entries with associated photometry |
118204 |
| Mean sky density |
~ 3 per square degree |
| Limiting magnitude |
V ~ 12.4 mag |
| Completeness |
Up to V = 7.3 - 9.0 mag |
| |
|
| Median precision of positions, J1991.25 (Hp < 9 mag) |
0.77/0.64 mas (RA/dec) |
| Median Precision of parallaxes (Hp < 9 mag) |
0.97 mas |
| Median precision of proper motion (Hp < 9 mag) |
0.88/0.74 mas/yr (RA/dec) |
| 10 per cent (each of the five parameters) better than |
0.47-0.66 mas |
| Distance determined to better than 10 per cent (σπ/π < 0.1 ) |
20853 |
| Distance determined to better than 20 per cent (σπ /π < 0.2 ) |
49399 |
| Inferred ratio of external errors to standard errors |
~1.0 - 1.2 |
| Estimated systematic errors in astrometry |
< 0.1 mas |
| Total number of independent astrometric abscissae |
~ 3.6 x 106 |
| Median photometric precision (Hp, for Hp < 9 mag) |
0.0015 mag |
| Mean number of photometric observations per star |
110 |
| Total number of Hp photometric measurements |
~13 x 106 |
| Number of entries variable or possibly variable |
11597 (8237 new) |
|
Periodic variables
|
2712 (970 new) |
|
Cepheid type
|
273 (2 new) |
|
RR Lyrae type
|
186 (9 new) |
|
δ scuti and SX phoenicis type
|
108 (35 new) |
|
Eclipsing binaries (e.g., EA, EB, EW, ...)
|
917 (343 new) |
|
Other types (e.g., M, SR, RV Tau, ..)
|
1238 (576 new) |
|
Non-periodic and unsolved (e.g., RCrB, γ Cas, Z And)
|
5542 (4145 new) |
|
Not investigated (including micro-variables)
|
3343 (3122 new) |
| |
|
| Number of solved or suspected double/multiple systems |
23882 |
|
Systems with component data (annex part C)
|
12195 (2996 new) |
|
Orbital systems (annex part O)
|
235 |
|
Astrometric binaries (annes parts G and V)
|
2910 |
|
Suspected non-single (including annex part X)
|
8542 |
