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Дата изменения: Mon Dec 23 18:23:59 2013
Дата индексирования: Fri Feb 28 19:12:13 2014
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Documentation: LEDA: raw data : diameters

Table of raw diameters


The table rawdia contains the following parameters :

lax decimal log of major axis (in 0.1 arcmin)
e_lax uncertainty on major axis
sax decimal log of major axis to minor axis ratio (log D/d)
e_sax uncertainty on sax
dcode code for the type of diameter following table dcode below
band photometric band following table band below
isophote isophotal level in mag.arsec-2 for isophotal diameters
quality code for quality according to the table quality below
iref bibliographic reference code


Dcode Definition
1 visual internal diameter
2 visual external diameter
3 external diameter from surface photometry
4 external diameter from aperture photometry
5 effective diameter
6 Dn diameter (up to a mean SB of 20.75 B_mag-arsec-2)
7 external 3-sigma isophotal diameter


Band Definition
0 unknown (or coadd)
1 unknown in visible domain
2 U band
3 B band
4 V band
5 pg Holmberg
6 pv Holmberg
7 radio (21-cm line)
8 IRAS 12 mu
9 IRAS 25 mu
10 IRAS 60 mu
11 IRAS 100 mu
12 H band 1.6mu for Aaronson system)
13 I band for Mathewson system
14 R band
15 J band
16 K band
17 H band
18 z band
19 not used
20 I DENIS
21 J DENIS
22 K DENIS
23 J 2MASS
24 H 2MASS
25 K 2MASS
26 u SDSS (Sloan)
27 g SDSS (Sloan)
28 r SDSS (Sloan)
29 i SDSS (Sloan)
30 z SDSS (Sloan)


Quality Definition
0 accurate
1 doubtful or 1sigma detection
2 upper limit
9 measurement to be rejected