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JPL Small-Body Database Browser
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(2018 XA)
Classification: Apollo [NEO]          SPK-ID: 3836664
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6768785418313154 7.4363e-05  
a 2.593437351804227 0.00056282 au
q .8379952587841139 1.1002e-05 au
i 3.950634128570264 0.0003284 deg
node 252.9874722340258 5.4487e-05 deg
peri 121.7371282809651 0.0002246 deg
M 230.9410109713706 0.075454 deg
tp 2459943.387286020491
(2022-Dec-29.88728602)
0.49776 TDB
period 1525.499497936582
4.18
0.49659
0.00136
d
yr
n .2359882782570184 7.682e-05 deg/d
Q 4.348879444824339 0.00094377 au
  Orbit Determination Parameters
   # obs. used (total)      152  
   data-arc span      33 days  
   first obs. used      2018-12-01  
   last obs. used      2019-01-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .40843  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:55:45  

Additional Information
 Earth MOID = .00833956 au 
 Jupiter MOID = 1.18393 au 
 T_jup = 3.043 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 23.7   .40885 E2019A34 autocmod 2.6q
rotation period rot_per 3.6352 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2018) http://www.asu.cas.cz/~ppravec/neo.htm]

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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