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284931 (2010 DR)
Classification: Main-belt Asteroid          SPK-ID: 2284931
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08107022747847284 1.0641e-07  
a 2.385390857396642 4.1027e-08 au
q 2.192006677962427 2.7559e-07 au
i 11.5781918627317 1.1118e-05 deg
node 318.9296351875487 4.2014e-05 deg
peri 241.6180592431806 8.6025e-05 deg
M 251.0364597415218 8.5879e-05 deg
tp 2459407.801919528095
(2021-Jul-12.30191953)
0.00032772 TDB
period 1345.667465303425
3.68
3.4717e-05
9.505e-08
d
yr
n .2675252313682313 6.9019e-09 deg/d
Q 2.578775036830857 4.4353e-08 au
  Orbit Determination Parameters
   # obs. used (total)      131  
   data-arc span      7389 days (20.23 yr)  
   first obs. used      2000-07-31  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50091  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 20:31:23  

Additional Information
 Earth MOID = 1.21772 au 
 Jupiter MOID = 2.45885 au 
 T_jup = 3.504 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457398.5 (2016-Jan-11.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08104562521590919 1.0631e-07  
q 2.19196186612876 2.7522e-07 au
tp 2458063.983098030796
(2017-Nov-06.48309803)
0.00030759 TDB
node 318.9888793890025 4.2006e-05 deg
peri 241.9945569516192 8.6283e-05 deg
i 11.57930459804921 1.112e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      131  
   data-arc span      7389 days (20.23 yr)  
   first obs. used      2000-07-31  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50091  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 20:31:23  

Additional Information
 Jupiter MOID = 2.45885 au 
 T_jup = 3.504 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.130228281027986E-14 -2.90608327203099E-14 -1.732688831276592E-11 -1.201268457306351E-15 -3.993007587295751E-12 7.227636773049507E-15
q -2.90608327203099E-14 7.574857122710117E-14 4.801208302485546E-11 1.385277222018124E-14 1.10039499365709E-11 -1.316032879387215E-14
tp -1.732688831276592E-11 4.801208302485546E-11 9.46135669418449E-8 8.448941710538265E-11 2.318206186829708E-8 3.311385124002095E-11
node -1.201268457306351E-15 1.385277222018124E-14 8.448941710538265E-11 1.764531596503813E-9 -1.706670948715868E-9 5.398481854594585E-11
peri -3.993007587295751E-12 1.10039499365709E-11 2.318206186829708E-8 -1.706670948715868E-9 7.444839081047345E-9 -4.483858968991244E-11
i 7.227636773049507E-15 -1.316032879387215E-14 3.311385124002095E-11 5.398481854594585E-11 -4.483858968991244E-11 1.236519368412868E-10

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 17.0   n/a MPO503265  
diameter diameter 2.875 km 0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.037   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

284931 (2010 DR)          Discovered 2010-Feb-16 by Lowe, A. at Mayhill
Reference: 20110813/Numbers.arcLast Updated: 2011-08-16

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2171-Sep-14 18:40 00:06 Amphi 0.0469412316762998 0.046668443200382 0.0472152151569983 3.8666449291469 3.86664489747426 2514258.277678069 6.0120933913069 18029.6389284432 140.321814463938 -40.9060175308336 32752.8383757013 T 10 CATAB v2.0f-lin.ifort 2020-Nov-11 20:31:23 2020-Nov-11 20:31
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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