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337866 (2001 WL15)
Classification: Amor [NEO]          SPK-ID: 2337866
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 148 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4750520417222481 5.2583e-09  
a 1.987359152930049 3.0394e-09 au
q 1.043260129695232 1.0824e-08 au
i 6.945736824355012 2.9514e-06 deg
node 112.1663311254819 1.3315e-05 deg
peri 14.50198813963376 1.5636e-05 deg
M 198.8285529464492 1.9161e-06 deg
tp 2459458.640378484115
(2021-Sep-01.14037848)
6.1112e-06 TDB
period 1023.323543155144
2.80
2.3475e-06
6.427e-09
d
yr
n .3517948965485896 8.0703e-10 deg/d
Q 2.931458176164866 4.4833e-09 au
  Orbit Determination Parameters
   # obs. used (total)      979  
   # delay obs. used      4  
   # Doppler obs. used      0  
   data-arc span      7324 days (20.05 yr)  
   first obs. used      2000-07-31  
   last obs. used      2020-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .34641  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-20 07:03:08  

Additional Information
 Earth MOID = .0637221 au 
 Jupiter MOID = 2.15515 au 
 T_jup = 3.698 
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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 18.7   n/a MPO476553  
rotation period rot_per 8.955 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:
[Hicks, M.; Thackeray, B. (2016) Astronomer's Telegram 8905 and 9029. http://www.astronomerstelegram.org]
[Warner, B.D. (2016) Minor Planet Bull. 43, 240-250.]
SMASSII spectral type spec_B Sk   n/a Binzel et al. (2004) Icarus 170, 259-294  

337866 (2001 WL15)          Discovered 2001-Nov-23 by NEAT at Haleakala
Reference: 20121029/Numbers.arcLast Updated: 2012-11-08

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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