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39246 (2000 YU81)
Classification: Main-belt Asteroid          SPK-ID: 2039246
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1881097908911854 4.3611e-08  
a 2.456459753198877 1.1649e-08 au
q 1.994375622692024 1.0163e-07 au
i 2.210423228524427 3.7426e-06 deg
node 170.1528025822805 8.2203e-05 deg
peri 170.186328323929 8.2762e-05 deg
M 103.3546223239108 1.1543e-05 deg
tp 2458596.770661710594
(2019-Apr-23.27066171)
4.3339e-05 TDB
period 1406.251201118865
3.85
1.0003e-05
2.739e-08
d
yr
n .2559997813431703 1.821e-09 deg/d
Q 2.918543883705731 1.3841e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1280  
   data-arc span      8441 days (23.11 yr)  
   first obs. used      1996-12-17  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53987  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:08:38  

Additional Information
 Earth MOID = .98587 au 
 Jupiter MOID = 2.47705 au 
 T_jup = 3.467 
[ 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 15.2   n/a MPO449240  
rotation period rot_per 2.987 h n/a LCDB (Rev. 2019-August); 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.]

39246 (2000 YU81)          Discovered 2000-Dec-30 by LINEAR at Socorro
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

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