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

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1378554029320397 8.8309e-08  
a 5.304764884246812 1.1953e-07 AU
q 4.573474383669233 5.1224e-07 AU
i 6.915000826482065 8.6233e-06 deg
node 283.9082449160315 7.4748e-05 deg
peri 41.13674105361407 7.9292e-05 deg
M 38.21350209847039 2.7504e-05 deg
tp 2455926.790628205302
(2011-Dec-31.29062821)		 0.00033823 JED
period 4462.69942510497
12.22		 0.00015083
4.13e-07		 d
yr
n .08066866389764357 2.7264e-09 deg/d
Q 6.036055384824392 1.36e-07 AU
   Orbit Determination Parameters
   # obs. used (total)      1043  
   data-arc span      30046 days (82.26 yr)  
   first obs. used      1930-10-17  
   last obs. used      2013-01-20  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .61301  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Mar-29 14:20:25  

Additional Information
 Earth MOID = 3.56512 AU 
 T_jup = 2.966 
[ 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-May-01) 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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