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1172 Aneas (1930 UA)
Classification: Jupiter Trojan          SPK-ID: 2001172
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 92 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1053622429844136 4.2754e-08  
a 5.221817774330183 5.7223e-08 au
q 4.671635341170877 2.5421e-07 au
i 16.66200495065371 4.2988e-06 deg
node 247.3273186701296 1.5054e-05 deg
peri 50.60962540103982 2.6708e-05 deg
M 321.4638229295201 2.3697e-05 deg
tp 2459667.048849966582
(2022-Mar-28.54884997)
0.00028859 TDB
period 4358.439231810336
11.93
7.1643e-05
1.961e-07
d
yr
n .0825983754396569 1.3577e-09 deg/d
Q 5.77200020748949 6.3252e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2782  
   data-arc span      33029 days (90.43 yr)  
   first obs. used      1930-10-17  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .395  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:14:57  

Additional Information
 Earth MOID = 3.68232 au 
 Jupiter MOID = .485013 au 
 T_jup = 2.905 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 8.28   n/a E2021B10 IRAS observations used: 11
diameter diameter 118.020 km 0.806 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 8.705 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[French, L.M.; Stephens, R.D.; Lederer, S.M.; Coley, D.R.; Rohl, D.A. (2011) Minor Planet Bull. 38, 116-120.]
[Mottola, S.; Di Martino, M.; Erikson, A.; Gonano-Beurer, M.; et al. (2011) Astron. J. 141, A170.]
[Stephens, R.D.; Coley, D.R.; French, L.M. (2015) Minor Planet Bull. 42, 216-224.]
[Stephens, R.D.; Coley, D.R.; French, L.M. (2016) Minor Planet Bull. 43, 265-270.]
[Stephens, R.D. (2017) Minor Planet Bull. 44, 123-125.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.059   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
B-V BV 0.725   0.038 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=2.69, mean=3.49, max.=4.87) deg.
U-B UB 0.254   0.033 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=7; phase (min.=2.69, mean=4.41, max.=9.96) deg.
Tholen spectral type spec_T D   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

1172 Aneas (1930 UA)          Discovered 1930-Oct-17 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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