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633 Zelima (A907 JH)
Classification: Main-belt Asteroid          SPK-ID: 2000633
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 53 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08393681319547611 1.685e-08  
a 3.01951005917215 1.0928e-08 au
q 2.766062007393557 5.0473e-08 au
i 10.90330301477065 1.1178e-06 deg
node 147.2735902484696 3.6994e-06 deg
peri 190.270797765182 1.4432e-05 deg
M 190.3532287946965 1.7145e-05 deg
tp 2460299.621633599164
(2023-Dec-21.12163360)
9.3499e-05 TDB
period 1916.474954316931
5.25
1.0404e-05
2.848e-08
d
yr
n .1878448759213297 1.0198e-09 deg/d
Q 3.272958110950744 1.1845e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3544  
   data-arc span      41685 days (114.13 yr)  
   first obs. used      1907-05-13  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38421  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 11:21:53  

Additional Information
 Earth MOID = 1.75617 au 
 Jupiter MOID = 2.09137 au 
 T_jup = 3.214 
[ 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 10.06   n/a MPO614063 IRAS observations used: 8
diameter diameter 33.387 km 0.538 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 11.730 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2006) Minor Planet Bull. 33, 85-88.]
[Pilcher, F. (2016) Minor Planet Bull. 43, 222-224.]
geometric albedo albedo 0.203   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.765   0.035 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=6.34, mean=8.15, max.=9.95) deg.
U-B UB 0.445   0.035 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=6.34, mean=8.15, max.=9.95) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B S   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)

633 Zelima (A907 JH)          Discovered 1907-May-12 by Kopff, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A907 JH = 1939 ND = A918 OA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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