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100685 (1997 YH2)
Classification: Main-belt Asteroid          SPK-ID: 2100685
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1175701061017106 4.8357e-08  
a 2.167079837308368 9.7549e-09 au
q 1.912296030905146 1.0971e-07 au
i 5.339519424375257 4.3979e-06 deg
node 99.71839732646939 4.3977e-05 deg
peri 29.59677794349627 4.8478e-05 deg
M 51.73560928206533 2.2248e-05 deg
tp 2459033.045099569032
(2020-Jul-02.54509957)
7.1587e-05 TDB
period 1165.227683440974
3.19
7.8677e-06
2.154e-08
d
yr
n .3089524949638192 2.0861e-09 deg/d
Q 2.421863643711591 1.0902e-08 au
  Orbit Determination Parameters
   # obs. used (total)      503  
   data-arc span      8490 days (23.24 yr)  
   first obs. used      1997-12-21  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54725  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 08:31:57  

Additional Information
 Earth MOID = .929372 au 
 Jupiter MOID = 2.61809 au 
 T_jup = 3.677 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.7   n/a MPO280442  
rotation period rot_per 2.50 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

100685 (1997 YH2)          Discovered 1997-Dec-21 by Kobayashi, T. at Oizumi
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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