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JPL Small-Body Database Browser
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11397 (1998 XX93)
Classification: Jupiter Trojan          SPK-ID: 2011397
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06178317370677065 7.0296e-08  
a 5.254140179108821 1.1984e-07 au
q 4.929522723743217 4.4962e-07 au
i 20.99444221739155 4.5093e-06 deg
node 261.215910102357 1.9634e-05 deg
peri 151.1499525561638 5.7752e-05 deg
M 332.8485421302349 5.5829e-05 deg
tp 2459332.273399557496
(2021-Apr-27.77339956)
0.00068507 TDB
period 4398.96908717012
12.04
0.0001505
4.12e-07
d
yr
n .08183735617737425 2.7998e-09 deg/d
Q 5.578757634474425 1.2724e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1450  
   data-arc span      15254 days (41.76 yr)  
   first obs. used      1978-04-29  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42881  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:02:07  

Additional Information
 Earth MOID = 3.95546 au 
 Jupiter MOID = .140614 au 
 T_jup = 2.863 
[ 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 10.2   n/a MPO425920  
diameter diameter 45.431 km 0.688 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 12.70 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:
[French, L.M.; Stephens, R.D.; Coley, D.R.; Megna, R.; Wasserman, L.H. (2012) Minor Planet Bull. 39, 183-187.]
geometric albedo albedo 0.078   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

11397 (1998 XX93)          Discovered 1998-Dec-15 by LINEAR at Socorro
Reference: 19990831/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 XX93 = 1997 XB12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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