J/ApJS/189/336 HST astrometry of TNOs (Benecchi+, 2010)
Hubble Space Telescope astrometry of trans-Neptunian objects.
Benecchi S.D., Noll K.S.
<Astrophys. J. Suppl. Ser., 189, 336-340 (2010)>
=2010ApJS..189..336B 2010ApJS..189..336B
ADC_Keywords: Minor planets ; Positional data ; Magnitudes
Keywords: astrometry - Kuiper belt: general
Abstract:
We present 1428 individual astrometric measurements of 256
trans-Neptunian objects made with Hubble Space Telescope (HST). The
observations were collected over three years with two instruments, the
Wide Field Planetary Camera 2 and the Advanced Camera for Surveys High
Resolution Camera, as part of four HST programs. We briefly describe
the data and our analysis procedures. The submission of these
measurements to the Minor Planet Center increased the individual
arc length of objects by 1.83 days to 8.11 years. Of the 256 total
objects, 62 (24.2%) had arc length increases of ≥3 years. The arc
length for 60 objects (23.4%) was increased by a factor of 2 or
greater.
Description:
The data were obtained from HST programs 10514, 10800, 11113, and
11178 and included 256 unique objects which were observed 3-4 times in
a single HST orbit with the telescope tracking at the rate of the TNO.
Observations were obtained using the Advanced Camera for Surveys High
Resolution Camera (HRC) and the WFPC2.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 116 1428 Astrometric results for all submitted measurements
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See also:
B/astorb : Orbits of Minor Planets (Bowell+ 2010)
J/A+A/468/L13 : Photometry of the trans-Neptunian object 2005FY9 (Ortiz+,
2007)
J/A+A/508/451 : Light curves of 5 Trans-Neptunian Objects (Perna+, 2009)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- MPC Object name in MPC packed format
9- 24 A16 "datime" Obs.Date Date of the observation (in
YYYY/MM/DD.ddddd format)
26- 27 I2 h RAh Hour of Right Ascension (J2000)
29- 30 I2 min RAm Minute of Right Ascension (J2000)
32- 36 F5.2 s RAs Second of Right Ascension (J2000)
38 A1 --- DE- Sign of the Declination (J2000)
39- 40 I2 deg DEd Degree of Declination (J2000)
42- 43 I2 arcmin DEm Arcminute of Declination (J2000)
45- 48 F4.1 arcsec DEs Arcsecond of Declination (J2000)
50- 53 F4.1 mag mag ?=99.9 HST measured magnitude in Filt
55- 59 A5 --- Filt Filter used (F606W or CLEAR)
61- 65 A5 --- PropID HST Proposal identification number
67- 71 A5 --- Instr HST instrument used
73- 77 F5.2 arcsec dRA Residual in RA provide by B. Marsden
79- 83 F5.2 arcsec dDE Residual in DE provide by B. Marsden
85- 90 F6.3 yr prev.arc Orbit arc-length previous to HST measurements
92- 97 F6.3 yr post.arc Orbit arc-length including HST measurements
100-105 I6 --- Planet ? Planet number (column added at CDS)
107-116 A10 --- Name Preliminary planet name (column added at CDS)
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 23-Sep-2010