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48861 (1998 HR24)
Classification: Main-belt Asteroid          SPK-ID: 2048861
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2282635844768021 3.1888e-08  
a 2.192293517683784 6.1781e-09 au
q 1.691872741112026 6.8927e-08 au
i 5.688427660472956 3.7707e-06 deg
node 48.35266324695909 3.3439e-05 deg
peri 260.9319402371768 3.5048e-05 deg
M 224.7155712327281 1.2514e-05 deg
tp 2459446.045219109507
(2021-Aug-19.54521911)
4.2087e-05 TDB
period 1185.622619993836
3.25
5.0118e-06
1.372e-08
d
yr
n .3036379316058187 1.2835e-09 deg/d
Q 2.692714294255542 7.5883e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1599  
   data-arc span      8043 days (22.02 yr)  
   first obs. used      1998-04-21  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48922  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:49:28  

Additional Information
 Earth MOID = .68922 au 
 Jupiter MOID = 2.5921 au 
 T_jup = 3.631 
[ 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 15.1   n/a MPO309528  
diameter diameter 2.625 km 0.177 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.256   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48861 (1998 HR24)          Discovered 1998-Apr-24 by Visnjan at Visnjan
Reference: 20021120/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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