Field HIP:                   
HIPPARCOS number (See the description of Field 1 of the ARIHIP.)

Field Tabular Note: 


Columns H to V: 
Indicators for binarity


Column H:
HIPPARCOS indicators for a suspected visual binary:
     s = Flag S in HIP Field H61
     d = Flag D in HIP Field H52, based on photometry. This could be an indication of duplicity.
     t = HIP Flags S and D (t = s+d).


Column U:
HIPPARCOS percentage of rejected data (HIP Field H29, F1):
percentage of rejected HIP data
(one digit: 0, 1, 2, ... percent; 9: 9 or more percent)
A high percentage of rejected data may be caused by a duplicity of the object,
but other reasons cannot be excluded.


Column F:
HIPPARCOS goodness-of-fit parameter (HIP Field H30, F2):
                  -          F2 < 0
                  0     0 <= F2 < 1
                  1     1 <= F2 < 2
                  2     2 <= F2 < 3
                  3     3 <= F2 < 4
                  4     4 <= F2 < 5
                  etc.
                  8     8 <= F2 < 9
                  9     9 <= F2 
A large value of F2 (e.g. larger than 3) may be caused by a duplicity of
the object, but other reasons cannot be excluded.


Column K:
Indications on binarity provided by the catalogue of speckle observations
(Hartkopf et al. 1999).
                  b = binary resolved by speckle (or other interferometric)
                      observations (such objects are generally excluded from the ARIHIP)
                  u = possibly resolved
                  n = object observed, but not resolved (i.e. no hint to binarity)


Column C:
Indicator for a star which has one (or more) visual component(s) with a separation rho of at least 60".
Source of information:
                  c = CCDM (Dommanget and Nys 1994)
                  t = TYCHO2 (Hoeg et al. 2000)
                  w = WDS (Worley and Douglass 1997, and updated versions under the given URL)
                  r = other sources

Visual binaries with rho < 60" are generally excluded from the ARIHIP.



Column G:
Indications on binarity provided by the General Catalogue of Stellar Radial
Velocities (GCRV, Wilson 1953):

                  v = radial velocity is variable
                  u = radial velocity may be variable
                  2 = variable radial velocities for two stellar components
                  b = (other) indications of binarity
                  d = (other) indications of binarity are doubtful


Column B:
Indications on binarity provided by the Bright Star Catalogue (BSC, Hoffleit and Jaschek 1982).
The symbols v, u, 2, b, d have the same meaning as explained for Column G.


Column S:
Indications on binarity provided by the radial-velocity bibliography given in
the data block 'oRV' of SIMBAD (CDS Strasbourg).
The symbols v, u, 2, b, d have the same meaning as explained for Column G.


Column T:
Indications on binarity provided by the spectral-type bibliography given in the
data block 'MK' of SIMBAD (CDS Strasbourg).

                   b = binary
                   u = possibly a binary


Column A:
Indications on binarity provided by the Third Bibliographic Catalogue of
Stellar Radial Velocities (Barbier-Brossat et al. 1994).
The symbols v, u, 2, b, d have the same meaning as explained for Column G.


Column M:
Indications on binarity provided by the Bibliographic Catalogue of
Stellar Radial Velocities 1991-1998 (Malaroda et al. 2001).
The symbols v, u, 2, b, d have the same meaning as explained for Column G.
                   f = probably erroneous indication on binarity


Column L:
Indications on binarity from additional literature (e.g. from papers more
recent than those used for Column M).
The symbols v, u, 2, b, d have the same meaning as explained for Column G.
                   c = radial velocity is probably constant


Column V:
Indications on binarity from photometric variability.
                   a = eclipsing binary, Algol type
                   b = eclipsing binary, beta Lyrae type
                   e = eclipsing binary, type uncertain
                   w = eclipsing binary, W Ursae Majoris type

Column P:
Indicator for a variability of the radial velocity V_rad due to
stellar pulsation (which may be confused with a variability of
V_rad due to spectroscopic binarity).
                   c = Cepheid
                   s = delta Scuti star
                   b = beta Cephei star


Column I:
                   i = an individual note on this star is given in
                       Part I (1-560) or III (3001-3024) of the FK6

Field Indiv. Note:
Number of the individual note