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4796 Lewis (1989 LU)
Classification: Main-belt Asteroid          SPK-ID: 2004796
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 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1797331213224007 8.7057e-09  
a 2.355186820045919 7.278e-09 au
q 1.931881741581687 1.9236e-08 au
i 2.274038503696943 3.8979e-07 deg
node 296.3696557430316 7.0071e-06 deg
peri 35.8332030537313 9.1216e-06 deg
M 202.6311531534172 4.5967e-06 deg
tp 2459777.602202763201
(2022-Jul-17.10220276)
1.8487e-05 TDB
period 1320.190095802711
3.61
6.1194e-06
1.675e-08
d
yr
n .2726880023903756 1.264e-09 deg/d
Q 2.778491898510152 8.586e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2596  
   data-arc span      17136 days (46.92 yr)  
   first obs. used      1974-04-24  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47674  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:51:29  

Additional Information
 Earth MOID = .919964 au 
 Jupiter MOID = 2.57628 au 
 T_jup = 3.532 
[ 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 13.64   n/a E2021B10  
rotation period rot_per 3.5086 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Chang, C.-K.; Ip, W.-H.; Cheng, Y.-C.; Ngeow, C.-C.; et al. (2014) Astrophys. J. 788, A17.]
[Hasegawa, S.; Miyaska, S.; Mito, H.; Sarugaku, Y.; et al. (2014) Pub. Astron. Soc. Japan 66, 54.]
[Oszkiewicz, D.; Skiff, B.A.; Moskovitz, N.; Kaniewicz, P.; et al. (2017) Astron. Astrophys. 599, A107.]
SMASSII spectral type spec_B V   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

4796 Lewis (1989 LU)          Discovered 1989-Jun-03 by Helin, E. F. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1989 LU = 1974 HJ1 = 1982 OH = 1986 TU12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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