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JPL Small-Body Database Browser
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65966 (1998 HH8)
Classification: Main-belt Asteroid          SPK-ID: 2065966
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08062815766842771 3.8331e-08  
a 2.305126130250624 8.155e-09 au
q 2.119268057175164 8.8969e-08 au
i 5.541226265702564 3.9827e-06 deg
node 55.68810561795784 3.8011e-05 deg
peri 162.9138706483873 4.5153e-05 deg
M 358.1713036418454 2.3252e-05 deg
tp 2458606.993510793994
(2019-May-03.49351079)
8.2565e-05 TDB
period 1278.322601460752
3.50
6.7836e-06
1.857e-08
d
yr
n .2816190526465107 1.4945e-09 deg/d
Q 2.490984203326084 8.8126e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1071  
   data-arc span      7690 days (21.05 yr)  
   first obs. used      1998-04-21  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53851  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:27:12  

Additional Information
 Earth MOID = 1.11178 au 
 Jupiter MOID = 2.47742 au 
 T_jup = 3.578 
[ 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 15.6   n/a MPO474537  
rotation period rot_per 4.363 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

65966 (1998 HH8)          Discovered 1998-Apr-24 by Stroncone at Stroncone
Reference: 20030910/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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