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1950 Wempe (1942 EO)
Classification: Main-belt Asteroid          SPK-ID: 2001950
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08387002269526286 2.9524e-08  
a 2.17942588825026 4.7051e-09 au
q 1.996637389540068 6.3729e-08 au
i 4.220954971319564 2.8783e-06 deg
node 69.93149635068006 5.1858e-05 deg
peri 53.37617910219578 5.6998e-05 deg
M 168.890954214095 2.426e-05 deg
tp 2458449.165114022197
(2018-Nov-26.66511402)
7.8728e-05 TDB
period 1175.199464504208
3.22
3.8056e-06
1.042e-08
d
yr
n .306330976888146 9.9198e-10 deg/d
Q 2.362214386960453 5.0997e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2916  
   data-arc span      28626 days (78.37 yr)  
   first obs. used      1942-03-23  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41995  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:43:27  

Additional Information
 Earth MOID = 1.01575 au 
 Jupiter MOID = 2.67608 au 
 T_jup = 3.674 
[ 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 13.2   n/a MPO265967  
diameter diameter 6.311 km 1.349 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
rotation period rot_per 16.788 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pray, D.P.; Galad, A.; Gajdos, S.; Vilagi, J.; et al. (2006) Minor Planet Bull. 33, 92-95.]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
geometric albedo albedo 0.323   0.092 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

1950 Wempe (1942 EO)          Discovered 1942-Mar-23 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1942 EO = 1968 HH1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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