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23968 (1998 XA13)
Classification: Jupiter Trojan          SPK-ID: 2023968
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .161008198735634 5.072e-08  
a 5.253300956725935 1.0627e-07 au
q 4.40747643226731 3.0288e-07 au
i 12.5079182406679 5.2901e-06 deg
node 84.03864694447202 2.4647e-05 deg
peri 28.811186739261 3.1537e-05 deg
M 252.5330057832919 2.4577e-05 deg
tp 2460313.363127139182
(2024-Jan-03.86312714)
0.00033089 TDB
period 4397.915185168776
12.04
0.00013345
3.654e-07
d
yr
n .08185696741356883 2.4839e-09 deg/d
Q 6.099125481184561 1.2338e-07 au
  Orbit Determination Parameters
   # obs. used (total)      913  
   data-arc span      10726 days (29.37 yr)  
   first obs. used      1991-03-19  
   last obs. used      2020-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51172  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 02:05:01  

Additional Information
 Earth MOID = 3.43059 au 
 Jupiter MOID = .496109 au 
 T_jup = 2.927 
[ 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 11.2   n/a MPO452506  
diameter diameter 31.358 km 2.729 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 11.140 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.065   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

23968 (1998 XA13)          Discovered 1998-Dec-08 by ODAS at Caussols
Reference: 20010408/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 XA13 = 2000 AR29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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