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46778 (1998 HR51)
Classification: Main-belt Asteroid          SPK-ID: 2046778
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1216738318423024 3.6777e-08  
a 2.166439495713722 6.9961e-09 au
q 1.902840500815728 7.9939e-08 au
i 2.891082198594503 3.6101e-06 deg
node 82.10415390994248 7.9365e-05 deg
peri 167.56204629 8.084e-05 deg
M 174.8726598112144 1.6147e-05 deg
tp 2458034.732900619070
(2017-Oct-08.23290062)
5.1708e-05 TDB
period 1164.711259021368
3.19
5.6418e-06
1.545e-08
d
yr
n .309089482231403 1.4972e-09 deg/d
Q 2.430038490611716 7.8473e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1391  
   data-arc span      7892 days (21.61 yr)  
   first obs. used      1998-03-22  
   last obs. used      2019-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49168  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:28:56  

Additional Information
 Earth MOID = .888597 au 
 Jupiter MOID = 2.58937 au 
 T_jup = 3.681 
[ 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 15.2   n/a MPO417140  
diameter diameter 2.177 km 0.496 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.258   0.238 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46778 (1998 HR51)          Discovered 1998-Apr-30 by LONEOS at Anderson Mesa
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HR51 = 1999 TD17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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