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65978 (1998 HS98)
Classification: Main-belt Asteroid          SPK-ID: 2065978
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 .2245930674675726 4.093e-08  
a 2.701103191028816 1.8368e-08 au
q 2.094454139809205 1.1099e-07 au
i 7.213293490225622 5.234e-06 deg
node 213.3686668513546 4.0966e-05 deg
peri 33.21370887910749 4.3385e-05 deg
M 246.6907091760439 1.8793e-05 deg
tp 2459110.855984212976
(2020-Sep-18.35598421)
8.8581e-05 TDB
period 1621.474752693687
4.44
1.654e-05
4.528e-08
d
yr
n .2220201081774152 2.2647e-09 deg/d
Q 3.307752242248427 2.2493e-08 au
  Orbit Determination Parameters
   # obs. used (total)      653  
   data-arc span      7659 days (20.97 yr)  
   first obs. used      1998-02-07  
   last obs. used      2019-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60039  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:08:23  

Additional Information
 Earth MOID = 1.08554 au 
 Jupiter MOID = 1.7293 au 
 T_jup = 3.319 
[ 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 15.0   n/a MPO436241  
rotation period rot_per 2.795 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

65978 (1998 HS98)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HS98 = 1999 TS203 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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