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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2222723176591952 3.5095e-08  
a 2.388568242920306 1.1276e-08 au
q 1.857655643679258 8.5156e-08 au
i 5.634184753057808 4.4577e-06 deg
node 43.80717744725001 4.8852e-05 deg
peri 235.3293756193843 5.0215e-05 deg
M 263.7732416966966 1.362e-05 deg
tp 2459560.911186641363
(2021-Dec-12.41118664)
5.159e-05 TDB
period 1348.357042039486
3.69
9.5477e-06
2.614e-08
d
yr
n .2669915970145966 1.8906e-09 deg/d
Q 2.919480842161354 1.3782e-08 au
  Orbit Determination Parameters
   # obs. used (total)      775  
   data-arc span      8035 days (22.00 yr)  
   first obs. used      1999-03-25  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53574  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 08:34:02  

Additional Information
 Earth MOID = .84654 au 
 Jupiter MOID = 2.23527 au 
 T_jup = 3.493 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457396.5 (2016-Jan-09.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2228065754275843 3.5031e-08  
q 1.855769619232164 8.5018e-08 au
tp 2456864.538184031053
(2014-Jul-26.03818403)
5.0267e-05 TDB
node 43.83127792022248 4.8851e-05 deg
peri 235.3179958254119 5.0215e-05 deg
i 5.635431702479719 4.4586e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      775  
   data-arc span      8035 days (22.00 yr)  
   first obs. used      1999-03-25  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53574  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 08:34:02  

Additional Information
 Jupiter MOID = 2.23527 au 
 T_jup = 3.493 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.227188641631109E-15 -2.96274341869984E-15 1.506244201009786E-13 -9.095857075332116E-15 6.99888052009992E-14 7.852793504658546E-16
q -2.96274341869984E-15 7.228090955529416E-15 -4.153619917011719E-13 2.134106196297951E-14 -1.724779195790439E-13 -1.728054699197581E-15
tp 1.506244201009786E-13 -4.153619917011719E-13 2.526726439005131E-9 2.214948869551921E-11 6.098130453315548E-10 3.887286503911776E-13
node -9.095857075332116E-15 2.134106196297951E-14 2.214948869551921E-11 2.386430503614754E-9 -2.369106560946484E-9 -6.60824217770623E-11
peri 6.99888052009992E-14 -1.724779195790439E-13 6.098130453315548E-10 -2.369106560946484E-9 2.521541693021364E-9 6.592644744178086E-11
i 7.852793504658546E-16 -1.728054699197581E-15 3.887286503911776E-13 -6.60824217770623E-11 6.592644744178086E-11 1.987940386453029E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.85   n/a MPCxxxxx  
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

Alternate Designations
 1999 JU65 = 1999 GC49 = 2000 VY19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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