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1173 Anchises (1930 UB)
Classification: Jupiter Trojan          SPK-ID: 2001173
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1368513219004365 5.611e-08  
a 5.300320793801734 8.4126e-08 au
q 4.574964886673595 3.124e-07 au
i 6.916265209136335 5.9269e-06 deg
node 283.9019472917993 5.1908e-05 deg
peri 40.9105422870087 5.6695e-05 deg
M 119.2906336444062 2.2043e-05 deg
tp 2455923.584988676190
(2011-Dec-28.08498868)
0.00027087 JED
period 4457.092630268746
12.20
0.00010611
2.905e-07
d
yr
n .08077014095583053 1.923e-09 deg/d
Q 6.025676700929872 9.5639e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1304  
   data-arc span      31110 days (85.17 yr)  
   first obs. used      1930-10-17  
   last obs. used      2015-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5635  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:37:31  

Additional Information
 Earth MOID = 3.56476 au 
 Jupiter MOID = .468115 au 
 T_jup = 2.967 
[ 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 8.89 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8
diameter diameter 126.27 km 10.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8
rotation period rot_per 11.60 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Published Reference List:
[French, L.M. (1987) Icarus 72, 325-341.]
geometric albedo albedo 0.0308   0.006 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8
B-V BV .691 mag .045 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=5; phase (min.=1.24, mean=5.53, max.=8.11) deg.
U-B UB .266 mag .080 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #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 | Physical Parameters | Discovery Circumstances ]
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