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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .137362676067332 6.2142e-08  
a 5.302963983984536 9.843e-08 AU
q 4.574534660055739 3.6317e-07 AU
i 6.915152871371899 6.2189e-06 deg
node 283.905961207528 5.8753e-05 deg
peri 41.12867605380827 6.3406e-05 deg
M 70.54734705078945 2.207e-05 deg
tp 2455926.413064609714
(2011-Dec-30.91306461)
0.00027485 JED
period 4460.427073380381
12.21
0.00012419
3.4e-07
d
yr
n .08070976031610583 2.2471e-09 deg/d
Q 6.031393307913333 1.1195e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      1157  
   data-arc span      30433 days (83.32 yr)  
   first obs. used      1930-10-17  
   last obs. used      2014-02-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58704  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:16:04  

Additional Information
 Earth MOID = 3.56527 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 Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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 (024)
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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