Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
29 Amphitrite
Classification: Main-belt Asteroid          SPK-ID: 2000029
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 139 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07211218854063263 3.2337e-08  
a 2.555143366689605 3.9125e-09 AU
q 2.370886386482537 8.2674e-08 AU
i 6.0893821025435 3.2475e-06 deg
node 356.4215366783205 3.3741e-05 deg
peri 61.92412806385555 4.3463e-05 deg
M 259.534228191598 2.6466e-05 deg
tp 2457416.829284941892
(2016-Jan-29.32928494)
0.00010982 JED
period 1491.836870221972
4.08
3.4265e-06
9.381e-09
d
yr
n .2413132475713884 5.5426e-10 deg/d
Q 2.739400346896672 4.1946e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1852  
   data-arc span      57626 days (157.77 yr)  
   first obs. used      1855-07-25  
   last obs. used      2013-05-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .66549  
   data source      ORB  
   producer      Davide Farnocchia  
   solution date      2013-Jul-16 08:47:07  

Additional Information
 Earth MOID = 1.38906 AU 
 T_jup = 3.426 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 5.85 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
magnitude slope G 0.20   n/a PDS3 (MPC 17257) Fit
diameter diameter 212.22 km 6.8 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
rotation period rot_per 5.3921 h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Published Reference List:
[Chang, Y.C.; Chang, C.-s. (1963) Acta Astron. Sin. 11, 139-149.]
[Debehogne, H.; Surdej, A.; Surdej, J. (1978) Astron. Astrophys. Suppl. Ser. 32, 127-133.]
[Van Houten-Groeneveld, I.; van Houten, C.J.; Zappala, V. (1979) Astron. Astrophys. Suppl. Ser. 35, 223-232.]
[Tedesco, E.F.; Sather, R.E. (1981) Astron. J. 86, 1553-1558.]
[Magnusson, P. (1986) Icarus 68, 1-39.]
[Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R.; Greenberg, R.; et al. (1987) Icarus 70, 191-245.]
[Drummond, J.D.; Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R. (1988) Icarus 76, 19-77.]
[Magnusson, P. (1990) Icarus 85, 229-240.]
[Drummond, J.D.; Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R. (1991) Icarus 89, 44-64.]
[De Angelis, G. (1995) Planet. Space Sci. 43, 649-682.]
[Kaasalainen, M.; Torppa, J.; Piironen, J. (2002) Icarus 159, 369-395.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hamanowa, H.; Hamanowa, H. (2011) http://www2.ocn.ne.jp/~hamaten/astlcdata.htm]
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Marchis, F.; Durech, J. (2013) Icarus 226, 1045-1057.]
geometric albedo albedo 0.1793   0.012 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 11
B-V BV .838 mag .020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=60; phase (min.=.46, mean=10.77, max.=24.12) deg.
U-B UB .449 mag .049 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=46; phase (min.=.46, mean=8.83, max.=23.91) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

29 Amphitrite          Discovered 1854-Mar-01 by Marth, A. at London
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A899 NG 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Oct-25 19:43 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin