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35891 (1999 JS81)
Classification: Main-belt Asteroid          SPK-ID: 2035891
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2013814648195443 3.8044e-08  
a 2.422244534042512 8.6521e-09 au
q 1.934449381625897 9.116e-08 au
i 11.34024119922193 3.9435e-06 deg
node 138.4222953230926 1.8196e-05 deg
peri 227.0967139682552 2.0285e-05 deg
M 69.41485169134772 7.6714e-06 deg
tp 2458734.993411158734
(2019-Sep-08.49341116)
2.9494e-05 TDB
period 1376.972933801856
3.77
7.3777e-06
2.02e-08
d
yr
n .2614430473996545 1.4008e-09 deg/d
Q 2.910039686459128 1.0394e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1752  
   data-arc span      8045 days (22.03 yr)  
   first obs. used      1998-01-24  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51572  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 03:59:00  

Additional Information
 Earth MOID = .949645 au 
 Jupiter MOID = 2.57629 au 
 T_jup = 3.459 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456933.5 (2014-Oct-03.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2029296049127675 3.825e-08  
q 1.929845111649042 9.1814e-08 au
tp 2457357.096332687714
(2015-Nov-30.59633269)
3.0649e-05 TDB
node 138.5541341961095 1.8189e-05 deg
peri 226.7559175510458 2.0213e-05 deg
i 11.34510190597407 3.9469e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1752  
   data-arc span      8045 days (22.03 yr)  
   first obs. used      1998-01-24  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51572  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 03:59:00  

Additional Information
 Jupiter MOID = 2.57629 au 
 T_jup = 3.459 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.463046043440296E-15 -3.502350225678254E-15 -2.492676772525795E-13 1.495845063623501E-15 -8.371445272844842E-14 -6.473668334729257E-15
q -3.502350225678254E-15 8.429745523034346E-15 5.315995207759639E-13 -2.784395527558464E-15 1.78892040019717E-13 1.603856605998233E-14
tp -2.492676772525795E-13 5.315995207759639E-13 9.393764267984995E-10 -3.290324672567445E-12 2.818000569364985E-10 1.215556880162385E-12
node 1.495845063623501E-15 -2.784395527558464E-15 -3.290324672567445E-12 3.308533251960262E-10 -3.247793032846472E-10 1.898241532157318E-11
peri -8.371445272844842E-14 1.78892040019717E-13 2.818000569364985E-10 -3.247793032846472E-10 4.08547686175838E-10 -1.837345489797491E-11
i -6.473668334729257E-15 1.603856605998233E-14 1.215556880162385E-12 1.898241532157318E-11 -1.837345489797491E-11 1.557831574755047E-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 14.3   n/a MPO358959  
diameter diameter 5.127 km 0.178 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.169   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

35891 (1999 JS81)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JS81 = 1998 BH40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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