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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1683658674917677 3.5649e-08  
a 1.908754256044444 4.3869e-09 au
q 1.587385189896918 6.7842e-08 au
i 24.9828832364709 5.1331e-06 deg
node 179.8425030049864 8.3014e-06 deg
peri 102.3289661707873 1.5552e-05 deg
M 272.2103698735183 1.385e-05 deg
tp 2459235.389808062105
(2021-Jan-20.88980806)
3.7286e-05 TDB
period 963.2154820623865
2.64
3.3206e-06
9.091e-09
d
yr
n .3737481453570357 1.2885e-09 deg/d
Q 2.23012332219197 5.1255e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1928  
   data-arc span      15411 days (42.19 yr)  
   first obs. used      1978-04-08  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43371  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:45:26  

Additional Information
 Earth MOID = .711108 au 
 Jupiter MOID = 3.06425 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 14.0   n/a MPO502176  
rotation period rot_per 3.8492 h n/a LCDB (Rev. 2019-August); 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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