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100585 (1997 LN9)
Classification: Main-belt Asteroid          SPK-ID: 2100585
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1739144072738615 5.2172e-08  
a 2.542917724942969 1.1144e-08 au
q 2.100667696063316 1.3376e-07 au
i 11.56722603977897 3.7754e-06 deg
node 73.56957158937516 2.5221e-05 deg
peri 267.0002382270192 2.6999e-05 deg
M 207.2261303012069 1.187e-05 deg
tp 2459829.055265432927
(2022-Sep-06.55526543)
5.0709e-05 TDB
period 1481.142658767393
4.06
9.7366e-06
2.666e-08
d
yr
n .2430555881089752 1.5978e-09 deg/d
Q 2.985167753822621 1.3082e-08 au
  Orbit Determination Parameters
   # obs. used (total)      639  
   data-arc span      10746 days (29.42 yr)  
   first obs. used      1990-11-17  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57357  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 17:53:38  

Additional Information
 Earth MOID = 1.12864 au 
 Jupiter MOID = 2.4823 au 
 T_jup = 3.395 
[ 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 15.73   n/a E2021B55  
diameter diameter 2.236 km 0.490 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 26.5687 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:
[McNeill, A.; Mommert, M.; Trilling, D.E.; Llama, J.; Skiff, B. (2019) Ap. J. Suppl. Series 245, id.29.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.185   0.118 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

100585 (1997 LN9)          Discovered 1997-Jun-07 by Elst, E. W. at La Silla
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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