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120544 (1994 WK)
Classification: Inner Main-belt Asteroid          SPK-ID: 2120544
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 .09390821431979593 6.4075e-08  
a 1.925849286424735 5.6282e-09 au
q 1.744996218887535 1.2521e-07 au
i 22.81272840204153 6.7089e-06 deg
node 65.41142325824769 9.9415e-06 deg
peri 316.7196045988389 2.8051e-05 deg
M 307.5136621575585 2.6944e-05 deg
tp 2459342.823181412583
(2021-May-08.32318141)
7.3095e-05 TDB
period 976.18442083607
2.67
4.2793e-06
1.172e-08
d
yr
n .3687827753813893 1.6166e-09 deg/d
Q 2.106702353961936 6.1568e-09 au
  Orbit Determination Parameters
   # obs. used (total)      778  
   data-arc span      9370 days (25.65 yr)  
   first obs. used      1994-11-25  
   last obs. used      2020-07-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51966  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:56:27  

Additional Information
 Earth MOID = .784645 au 
 Jupiter MOID = 3.2464 au 
 T_jup = 3.818 
[ 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 16.00   n/a E2021B55  
rotation period rot_per 10.8861 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:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

120544 (1994 WK)          Discovered 1994-Nov-25 by Kobayashi, T. at Oizumi
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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