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52645 (1997 XR13)
Classification: Jupiter Trojan          SPK-ID: 2052645
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0427015437699232 6.7054e-08  
a 5.191651865443943 1.2292e-07 au
q 4.969960316073485 4.3219e-07 au
i 11.96053580919213 7.3501e-06 deg
node 60.56791458787155 2.9522e-05 deg
peri 26.11630899536414 9.7006e-05 deg
M 313.3471793831473 9.2861e-05 deg
tp 2459760.427987665020
(2022-Jun-29.92798766)
0.0011181 TDB
period 4320.72644042001
11.83
0.00015344
4.201e-07
d
yr
n .08331932256396334 2.959e-09 deg/d
Q 5.413343414814402 1.2816e-07 au
  Orbit Determination Parameters
   # obs. used (total)      514  
   data-arc span      12131 days (33.21 yr)  
   first obs. used      1987-11-24  
   last obs. used      2021-02-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51385  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:46:43  

Additional Information
 Earth MOID = 3.98959 au 
 Jupiter MOID = .00783413 au 
 T_jup = 2.955 
[ 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 12.49   n/a E2021B10  
diameter diameter 12.952 km 0.843 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.115   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

52645 (1997 XR13)          Discovered 1997-Dec-02 by Uppsala-DLR Trojan Survey at La Silla
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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