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464798 (2004 JX20)
Classification: Aten [NEO]          SPK-ID: 2464798
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 118 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2657634061323458 7.007e-08  
a .9015614315355422 1.4636e-09 au
q .6619593946531029 6.3461e-08 au
i 10.53086048017075 1.2642e-05 deg
node 101.7884039303332 3.4065e-05 deg
peri 349.1208829105168 3.1508e-05 deg
M 254.020459550596 4.5651e-05 deg
tp 2459292.547276861446
(2021-Mar-19.04727686)
3.9695e-05 TDB
period 312.6737437207571
0.86
7.6141e-07
2.085e-09
d
yr
n 1.151359867048859 2.8037e-09 deg/d
Q 1.141163468417982 1.8526e-09 au
  Orbit Determination Parameters
   # obs. used (total)      722  
   # delay obs. used      2  
   # Doppler obs. used      0  
   data-arc span      4452 days (12.19 yr)  
   first obs. used      2004-05-15  
   last obs. used      2016-07-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36396  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 16:02:45  

Additional Information
 Earth MOID = .0944487 au 
 Jupiter MOID = 4.01399 au 
 T_jup = 6.561 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 19.4   n/a MPO198885  
diameter diameter 1.109 km 0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
rotation period rot_per 10.758 h n/a LCDB (Rev. 2020-October); 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:
[Skiff, B.A. (2019) Posting on CALL web site: http://www.minorplanet.info/call.html]
geometric albedo albedo 0.028   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

464798 (2004 JX20)          Discovered 2004-May-15 by CSS at Catalina
Reference: Last Updated: 2016-04-25

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