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10390 Lenka (1997 QD1)
Classification: Main-belt Asteroid          SPK-ID: 2010390
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05894990191823239 5.316e-08  
a 2.144895718017394 8.2153e-09 au
q 2.018454325815432 1.1909e-07 au
i 3.896863240551025 4.4227e-06 deg
node 322.2019351306959 6.2144e-05 deg
peri 85.29363655802692 7.4309e-05 deg
M 22.20741465442041 4.212e-05 deg
tp 2458929.721199033886
0.00013406 TDB
period 1147.381122220321
n .3137579946437994 1.8026e-09 deg/d
Q 2.271337110219356 8.6996e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1390  
   data-arc span      12454 days (34.10 yr)  
   first obs. used      1985-12-14  
   last obs. used      2020-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51807  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 19:41:01  

Additional Information
 Earth MOID = 1.03203 au 
 Jupiter MOID = 2.90239 au 
 T_jup = 3.705 
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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 15.1   n/a MPO279625  
rotation period rot_per 129.982 h n/a LCDB (Rev. 2019-August); 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.]

10390 Lenka           Discovered 1997 Aug. 27 by P. Pravec and M. Wolf at Ondřejov.
Named in honor of Lenka Šarounová (b. 1973), an assiduous observer at the Ondřejov Observatory. She has a broad range of interests, from astronomy and meteorology to music. She loves gaining new experiences through traveling and meeting people. Her photometric and astrometric observations of minor planets became an integral part of the discoverers' research project on NEOs.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990728/MPCPages.arcLast Updated: 2010-06-11

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Alternate Designations
 1997 QD1 = 1985 XA1 = 1991 TV14 = 1996 FR23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-May-31 17:20 UT
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