urn:nasa:pds:compil-comet:nuc_properties:colors
1.0
Properties of Comet Nuclei - Colors
1.11.0.0
Product_Observational
Barnes, T.F.; M.F. A'Hearn; and L. Kolokolova
2019
This file contains published color measurements for cometary nuclei.
2015-08-10
1.0
Migration from PDS3
2010-08-01Z
Science
Derived
Colors
Small Bodies
Physical Properties
None
Other Investigation
urn:nasa:pds:context:investigation:individual.none
data_to_investigation
Literature Search
Literature Search
Multiple Cometary Nuclei
Comet
urn:nasa:pds:compil-comet:nuc_properties:references
data_to_ancillary_data
This file lists the full references for the papers cited by abbreviated
reference in the data file.
colors.tab
8588
76
0
76
This file originally contained 'Table 5. Colors of
cometary nuclei' from Lamy et al. (2004). It listed B-V, V-R and R-I colors
recorded for 21 different comet nuclei, collected from the literature.
Carriage-Return Line-Feed
13
0
113
Periodic Number
1
1
ASCII_String
3
%3s
Periodic number of the Comet. A blank has been used to represent those which do not have a Periodic Number.
Comet Type
2
4
ASCII_String
1
%-1s
Single letter indicating comet type. P = periodic,
C = non-periodic, D = defunct (believed to have disintegrated).
Comet Name
3
6
ASCII_String
25
%-25s
Name of the Comet.
Discovery ID
4
32
ASCII_String
10
%-10s
Discovery ID assigned by the MPC. These are provided
only for non-periodic comets. This may be an asteroid ID if the comet
was not obviously active when first discovered.
A blank has been used to represent those which do not have a Discovery ID.
Comet Class
5
43
ASCII_String
3
%-3s
Dynamic classification of the comet; either 'EC', for
ecliptic comets; or 'NIC' for nearly-isotropic comets.
If T[j] is the Tisserand parameter with respect to Jupiter, then
ecliptic comets (EC) are those with 2 <= T[j] <= 3 and a period of
less than about 20 year. Nearly isotropic comets (NIC) are those
with T[j] < 2.
BV
6
48
ASCII_Real
4
%4.2f
Magnitude
B-V color reported in the cited reference, if any.
-.99
BV Error
7
53
ASCII_Real
4
%4.2f
Magnitude
Size of the error bar (+/-) for the B-V value.
-.99
VR
8
59
ASCII_Real
4
%4.2f
Magnitude
V-R color reported in the cited reference, if any.
-.99
VR Error
9
64
ASCII_Real
4
%4.2f
Magnitude
Size of the error bar (+/-) for the V-R value.
-.99
RI
10
70
ASCII_Real
4
%4.2f
Magnitude
R-I color reported in the cited reference, if any.
-.99
RI Error
11
75
ASCII_Real
4
%4.2f
Magnitude
Size of the error bar (+/-) for the R-I value.
-.99
Photometry
12
81
ASCII_String
1
%-1s
Single character indicating the type of observation:
F = Filter photometry
S = Spectrophotometry
G = in situ measurements by the Giotto Halley Multicolour Camera.
Source
13
84
ASCII_String
28
%-28s
Reference for the cited values. These have been
expanded from the abbreviations used in Lamy et al. (2004). Note
also that the abbreviation 'M+02' used in that reference actually
corresponds to 'Meech et al. (2004)'.