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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08107023675375286 1.0663e-07  
a 2.385390835765112 4.4302e-08 au
q 2.192006635959402 2.7739e-07 au
i 11.57819101853899 1.1205e-05 deg
node 318.9296281221832 4.3278e-05 deg
peri 241.6180357910867 8.9754e-05 deg
M 251.0364995273362 9.1185e-05 deg
tp 2459407.801765269781
(2021-Jul-12.30176527)
0.0003486 TDB
period 1345.667446998974
3.68
3.7488e-05
1.026e-07
d
yr
n .267525235007245 7.4529e-09 deg/d
Q 2.578775035570822 4.7894e-08 au
  Orbit Determination Parameters
   # obs. used (total)      128  
   data-arc span      7116 days (19.48 yr)  
   first obs. used      2000-07-31  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49497  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 15:17:46  

Additional Information
 Earth MOID = 1.21772 au 
 Jupiter MOID = 2.45885 au 
 T_jup = 3.504 
[ 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 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 9 CATAB v2.0f-lin.ifort 2020-Feb-25 15:17:47 2020-Feb-25 15:17
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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