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JPL Small-Body Database Browser
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1173 Anchises (1930 UB)
Classification: Jupiter Trojan          SPK-ID: 2001173
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .138820472222539 5.1932e-08  
a 5.289128879858032 7.2319e-08 au
q 4.554889511110272 2.8517e-07 au
i 6.921512367878205 5.0082e-06 deg
node 283.9337862601535 3.9737e-05 deg
peri 40.58279860093164 4.3842e-05 deg
M 249.1648891832533 2.3213e-05 deg
tp 2460368.384757864853
(2024-Feb-27.88475786)
0.00030566 TDB
period 4442.982997017421
12.16
9.1124e-05
2.495e-07
d
yr
n .08102664364047046 1.6618e-09 deg/d
Q 6.023368248605793 8.2358e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2330  
   data-arc span      32616 days (89.30 yr)  
   first obs. used      1930-10-17  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47565  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:47:46  

Additional Information
 Earth MOID = 3.54657 au 
 Jupiter MOID = .481283 au 
 T_jup = 2.966 
[ 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 8.9   n/a MPO473779 IRAS observations used: 8
diameter diameter 99.549 km 0.846 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 11.595 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[French, L.M. (1987) Icarus 72, 325-341.]
[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.]
[Stephens, R.D.; Warner, B.D. (2018) Minor Planet Bull. 45, 124-128.]
geometric albedo albedo 0.050   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
B-V BV 0.691   0.045 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=1.24, mean=5.53, max.=8.11) deg.
U-B UB 0.266   0.080 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=1.24, mean=5.53, max.=8.11) deg.
Tholen spectral type spec_T P   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

1173 Anchises (1930 UB)          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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