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46772 (1998 HD8)
Classification: Main-belt Asteroid          SPK-ID: 2046772
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05924728539357516 4.5575e-08  
a 2.203495989540628 8.2256e-09 au
q 2.072944833784716 1.0203e-07 au
i 4.293010326676905 5.6657e-06 deg
node 161.9355821634399 5.1453e-05 deg
peri 38.36582120024065 6.7136e-05 deg
M 168.717603120262 4.4522e-05 deg
tp 2458040.581625496917
(2017-Oct-14.08162550)
0.00014679 TDB
period 1194.72189678649
3.27
6.6898e-06
1.832e-08
d
yr
n .3013253552716427 1.6873e-09 deg/d
Q 2.33404714529654 8.7129e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1052  
   data-arc span      7861 days (21.52 yr)  
   first obs. used      1998-04-21  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55707  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:28:56  

Additional Information
 Earth MOID = 1.07267 au 
 Jupiter MOID = 2.62335 au 
 T_jup = 3.657 
[ 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 15.3   n/a MPO452809  
diameter diameter 2.239 km 0.295 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.293   0.131 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46772 (1998 HD8)          Discovered 1998-Apr-21 by Antonini, P. at Bedoin
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

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