urn:nasa:pds:soho:swan_derived:c_1997_o1_tilbrook_water_tab
1.2
SOHO SWAN derived water production rates for comet C/1997 O1 (Tilbrook)
1.17.0.0
Product_Observational
2020
SOHO
SWAN
comet
water production rate
Lyman-alpha
C/1997 O1 (Tilbrook)
Water production rates for comet C/1997 O1 (Tilbrook) derived from SOHO/SWAN
Lyman-alpha observations acquired in 1997.
2017-02-15
1.0
Liens from data collection review corrected in label by Lori Feaga
2020-02-07
1.1
Added lid reference for target (B. Hirsch).
2022-08-01
1.2
Corrected lid reference for mission and updated to latest schema (B. Hirsch).
1997-06-28T19:46:33Z
1997-08-12T09:02:52Z
Science
Derived
Ultraviolet
Small Bodies
Production Rates
SOHO
Mission
urn:nasa:pds:context:investigation:mission.solar_and_heliospheric_observatory
data_to_investigation
SOlar and Heliospheric Observatory (SOHO)
Host
urn:nasa:pds:context:instrument_host:spacecraft.soho
is_instrument_host
Solar Wind ANisotropies (SWAN)
Instrument
urn:nasa:pds:context:instrument:soho.swan
is_instrument
C/1997 O1 (Tilbrook)
Comet
urn:nasa:pds:context:target:comet.c1997_o1_tilbrook
data_to_target
10.1088/0004-6256/141/4/128
Combi, M.R., Lee, Y., Patel, T.S., Makinen, J.T.T., Bertaux, J.-L., and Quemerais, E. 2011.
SOHO/SWAN Observations of Short-period Spacecraft Target Comets.
Astronomical Journal, 141, 128.
The analysis procedure and most recent recalibration of the SOHO/SWAN database is included
in this paper.
water_c_1997_o1_tilbrook.tab
C/1997 O1 (Tilbrook)
0
16
Water production rates and observational parameters of comet C/1997 O1 (Tilbrook)
as derived from Lyman-alpha data from the SOHO/SWAN instrument
Carriage-Return Line-Feed
7
0
80
UTC of observation
1
1
ASCII_Date_Time_YMD_UTC
20
%20s
The UTC time of observations in YYYY-MM-DDTHH:MM:SSZ.
Time from perihelion
2
22
ASCII_Real
9
%9.3f
day
The time prior to perihelion (-) or post perihelion (+) of the observation.
Heliocentric distance
3
32
ASCII_Real
8
%8.3f
AU
The heliocentric distance of the comet at the time of the observation.
Spacecraft-comet distance
4
41
ASCII_Real
8
%8.3f
AU
The distance between SOHO and the comet at the time of the observation.
g_factor
5
50
ASCII_Real
11
%11.6f
photon/s
The solar fluorescence g-factor at 1 AU for Hydrogen Lyman-alpha used in the
production rate derivation.
Water production rate
6
62
ASCII_Real
8
%8.2f
molecule/s
1.0e27
The water production rate derived from atomic hydrogen Lyman-alpha observations of the
comet. An apertures of radius between 4 and 8 degrees was used.
Water production rate uncertainty
7
71
ASCII_Real
8
%8.2f
molecule/s
1.0e27
1-sigma formal uncertainty of the water production rate from photon statistic noise,
coma model fitting, and interplanetary medium and star background subtraction.