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154709 (2004 KR)
Classification: Main-belt Asteroid          SPK-ID: 2154709
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08724298995132237 4.0958e-08  
a 2.258462747429069 1.348e-08 au
q 2.061427704649679 9.051e-08 au
i 7.307815078330819 4.674e-06 deg
node 227.024557464332 3.6477e-05 deg
peri 5.750321176947726 4.6055e-05 deg
M 266.3768380503178 2.9162e-05 deg
tp 2459322.902668497204
(2021-Apr-18.40266850)
0.00010079 TDB
period 1239.703490482115
3.39
1.1099e-05
3.039e-08
d
yr
n .2903920193529483 2.5999e-09 deg/d
Q 2.455497790208459 1.4656e-08 au
  Orbit Determination Parameters
   # obs. used (total)      516  
   data-arc span      6722 days (18.40 yr)  
   first obs. used      2001-07-25  
   last obs. used      2019-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57225  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 09:33:59  

Additional Information
 Earth MOID = 1.05069 au 
 Jupiter MOID = 2.53196 au 
 T_jup = 3.606 
[ 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 16.3   n/a MPO449833  
rotation period rot_per 0.68 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Incomplete or inconclusive result.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. Series 237, A19.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

154709 (2004 KR)          Discovered 2004-May-17 by LINEAR at Socorro
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ show close-approach data ]
Alternate Designations
 2004 KR = 2001 QS251 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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