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100877 (1998 HN86)
Classification: Main-belt Asteroid          SPK-ID: 2100877
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1231182282342989 4.5766e-08  
a 3.064162952734389 2.4513e-08 au
q 2.686908638972553 1.4286e-07 au
i 7.701809054398397 5.0303e-06 deg
node 222.4478031298761 4.1679e-05 deg
peri 349.5442987343433 4.7394e-05 deg
M 44.84129209826175 2.2153e-05 deg
tp 2458756.470780703881
(2019-Sep-29.97078070)
0.00012059 TDB
period 1959.143343909317
5.36
2.351e-05
6.437e-08
d
yr
n .1837537825494934 2.2051e-09 deg/d
Q 3.441417266496225 2.7532e-08 au
  Orbit Determination Parameters
   # obs. used (total)      636  
   data-arc span      8133 days (22.27 yr)  
   first obs. used      1998-04-21  
   last obs. used      2020-07-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61454  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:03:45  

Additional Information
 Earth MOID = 1.68122 au 
 Jupiter MOID = 1.53757 au 
 T_jup = 3.207 
[ 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 14.68   n/a E2021B55  
rotation period rot_per 30.9637 h n/a LCDB (Rev. 2020-October); 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

100877 (1998 HN86)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 HN86 = 2001 XS209 = 2003 EH34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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