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305969 (2009 HD70)
Classification: Main-belt Asteroid          SPK-ID: 2305969
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04170634456539381 7.7014e-08  
a 2.985018291396829 5.0622e-08 au
q 2.860524090001829 2.5653e-07 au
i 11.845348476902 1.1703e-05 deg
node 217.1136845259136 3.4325e-05 deg
peri 53.07268850963828 0.00013965 deg
M 6.450825424763693 0.00013562 deg
tp 2458966.745497597573
(2020-Apr-27.24549760)
0.00070954 TDB
period 1883.731160701613
5.16
4.7918e-05
1.312e-07
d
yr
n .1911100731942634 4.8615e-09 deg/d
Q 3.109512492791828 5.2733e-08 au
  Orbit Determination Parameters
   # obs. used (total)      168  
   data-arc span      5442 days (14.90 yr)  
   first obs. used      2004-06-16  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5754  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 09:08:26  

Additional Information
 Earth MOID = 1.8623 au 
 Jupiter MOID = 1.91811 au 
 T_jup = 3.224 
[ 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 16.2   n/a MPO471211  
diameter diameter 3.757 km 0.607 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.050   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

305969 (2009 HD70)          Discovered 2009-Apr-22 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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