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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05886854923989237 3.8706e-08  
a 2.20355359976155 6.8952e-09 au
q 2.073833596171245 8.6809e-08 au
i 4.293270868638575 4.2891e-06 deg
node 161.9243855905261 5.0595e-05 deg
peri 38.40903507915905 6.2364e-05 deg
M 349.4322466175298 3.8062e-05 deg
tp 2459235.572281969810
(2021-Jan-21.07228197)
0.00012638 TDB
period 1194.768750950929
3.27
5.6078e-06
1.535e-08
d
yr
n .3013135384679856 1.4143e-09 deg/d
Q 2.333273603351855 7.3011e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1226  
   data-arc span      8371 days (22.92 yr)  
   first obs. used      1998-04-21  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52708  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 05:40:16  

Additional Information
 Earth MOID = 1.07244 au 
 Jupiter MOID = 2.62186 au 
 T_jup = 3.657 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.35   n/a E2021B10  
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
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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