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101840 (1999 JU65)
Classification: Main-belt Asteroid          SPK-ID: 2101840
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2222723225646551 3.6176e-08  
a 2.38856824400228 1.1642e-08 au
q 1.857655632803713 8.7189e-08 au
i 5.63418457830901 4.5064e-06 deg
node 43.80717616805831 4.9858e-05 deg
peri 235.3293761158632 5.1214e-05 deg
M 263.7732417255208 1.3804e-05 deg
tp 2459560.911186778293
(2021-Dec-12.41118678)
5.2379e-05 TDB
period 1348.357042955655
3.69
9.8575e-06
2.699e-08
d
yr
n .2669915968331837 1.9519e-09 deg/d
Q 2.919480855200846 1.4229e-08 au
  Orbit Determination Parameters
   # obs. used (total)      734  
   data-arc span      8026 days (21.97 yr)  
   first obs. used      1999-03-25  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54214  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:38:56  

Additional Information
 Earth MOID = .84654 au 
 Jupiter MOID = 2.23527 au 
 T_jup = 3.493 
[ 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 15.8   n/a MPO348132  
diameter diameter 4.028 km 0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.92885 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.057   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101840 (1999 JU65)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 JU65 = 1999 GC49 = 2000 VY19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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