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2449 Kenos (1978 GC)
Classification: Mars-crossing Asteroid          SPK-ID: 2002449
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1682826560087712 3.6689e-08  
a 1.908925499039659 4.7983e-09 au
q 1.587686445938396 6.9472e-08 au
i 24.98115567627936 5.3871e-06 deg
node 179.8527719775891 9.0957e-06 deg
peri 102.2653261025525 1.7134e-05 deg
M 122.7921814690339 1.4315e-05 deg
tp 2458271.913202366496
(2018-Jun-02.41320237)
3.8203e-05 TDB
period 963.3451066091882
2.64
3.6322e-06
9.944e-09
d
yr
n .373697855036747 1.409e-09 deg/d
Q 2.230164552140922 5.6057e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1581  
   data-arc span      15218 days (41.66 yr)  
   first obs. used      1978-04-08  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45457  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 21:15:41  

Additional Information
 Earth MOID = .710759 au 
 Jupiter MOID = 3.06455 au 
 T_jup = 3.808 
[ 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 14.26   n/a PDS3 (MPC 17265)  
rotation period rot_per 3.8492 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2007) Minor Planet Bull. 34, 72-77.]
[Warner, B.D. (2010) Minor Planet Bull. 37, 161-165.]
[Warner, B.D. (2015) Minor Planet Bull. 42, 183-186.]
[Warner, B.D. (2018) Minor Planet Bull. 45, 380-386.]
B-V BV 0.684   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=31.04, mean=31.63, max.=32.22) deg.
U-B UB 0.356   0.038 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=32.22 deg.
Tholen spectral type spec_T E   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo

2449 Kenos (1978 GC)          Discovered 1978-Apr-08 by Liller, W. at Cerro Tololo
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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