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97281 (1999 XD151)
Classification: Main-belt Asteroid          SPK-ID: 2097281
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | 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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .18056855942525 4.9022e-08  
a 2.742522573481989 1.7217e-08 au
q 2.247309223197117 1.3684e-07 au
i 11.06033261706318 4.645e-06 deg
node 78.9280508543971 2.8829e-05 deg
peri 332.7700752630562 3.1738e-05 deg
M 173.056363827966 1.5474e-05 deg
tp 2458203.040168248666
(2018-Mar-25.54016825)
6.7731e-05 TDB
period 1658.913507022891
4.54
1.5621e-05
4.277e-08
d
yr
n .217009505604702 2.0435e-09 deg/d
Q 3.237735923766861 2.0325e-08 au
  Orbit Determination Parameters
   # obs. used (total)      702  
   data-arc span      7531 days (20.62 yr)  
   first obs. used      1999-09-14  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61617  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 17:30:33  

Additional Information
 Earth MOID = 1.26503 au 
 Jupiter MOID = 2.13244 au 
 T_jup = 3.299 
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Orbital Elements at Epoch 2457282.5 (2015-Sep-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1808343140684192 4.8899e-08  
q 2.246508905667686 1.3641e-07 au
tp 2456545.583313307375
(2013-Sep-10.08331331)
6.2774e-05 TDB
node 78.93648896530088 2.8827e-05 deg
peri 333.1110060683485 3.1742e-05 deg
i 11.06106264199321 4.6454e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      702  
   data-arc span      7531 days (20.62 yr)  
   first obs. used      1999-09-14  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61617  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 17:30:33  

Additional Information
 Jupiter MOID = 2.13244 au 
 T_jup = 3.299 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.391115157253859E-15 -6.635188195135571E-15 -6.713064025748477E-13 1.895083048513807E-14 -2.468767589853741E-13 2.067541892138909E-15
q -6.635188195135571E-15 1.860860618807364E-14 2.020503351036612E-12 -5.377851898837008E-14 7.352484363677146E-13 -5.22330639927212E-15
tp -6.713064025748477E-13 2.020503351036612E-12 3.940608815763191E-9 4.820821253683148E-12 8.656749965690984E-10 -3.918895411798453E-12
node 1.895083048513807E-14 -5.377851898837008E-14 4.820821253683148E-12 8.309819925025687E-10 -8.150140718243149E-10 -4.213074328748633E-11
peri -2.468767589853741E-13 7.352484363677146E-13 8.656749965690984E-10 -8.150140718243149E-10 1.007537028822481E-9 4.050627595982372E-11
i 2.067541892138909E-15 -5.22330639927212E-15 -3.918895411798453E-12 -4.213074328748633E-11 4.050627595982372E-11 2.157998439542865E-11

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 14.9   n/a MPO280420  
diameter diameter 2.908 km 0.766 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.275   0.146 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

97281 (1999 XD151)          Discovered 1999-Dec-09 by LONEOS at Anderson Mesa
Reference: 20050224/Numbers.arcLast Updated: 2005-02-28

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