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55733 Lepsius (1986 WS2)
Classification: Main-belt Asteroid          SPK-ID: 2055733
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1150873831413451 4.8317e-08  
a 2.977507551369947 1.9033e-08 au
q 2.634833998999185 1.4375e-07 au
i 12.32563252688242 5.1852e-06 deg
node 64.11499362346538 1.8526e-05 deg
peri 337.8829050049221 2.5017e-05 deg
M 183.8068151657484 1.8623e-05 deg
tp 2459918.968654602798
(2022-Dec-05.46865460)
0.00010144 TDB
period 1876.62602255618
5.14
1.7994e-05
4.926e-08
d
yr
n .191833639560022 1.8394e-09 deg/d
Q 3.320181103740708 2.1224e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1247  
   data-arc span      12252 days (33.54 yr)  
   first obs. used      1986-11-27  
   last obs. used      2020-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52041  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 22:19:59  

Additional Information
 Earth MOID = 1.6487 au 
 Jupiter MOID = 2.0686 au 
 T_jup = 3.216 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457342.5 (2015-Nov-16.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1153747590876451 4.8338e-08  
q 2.634301094265478 1.4385e-07 au
tp 2458045.100451680746
(2017-Oct-18.60045168)
9.2891e-05 TDB
node 64.13006951885525 1.8523e-05 deg
peri 338.5092465875035 2.4975e-05 deg
i 12.32636180559952 5.1854e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1247  
   data-arc span      12252 days (33.54 yr)  
   first obs. used      1986-11-27  
   last obs. used      2020-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52041  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 22:19:59  

Additional Information
 Jupiter MOID = 2.0686 au 
 T_jup = 3.216 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.336608334042137E-15 -6.905912095190937E-15 4.047495974661515E-13 2.167848644861227E-15 3.741716310664903E-14 1.81807188623565E-15
q -6.905912095190937E-15 2.069407205537239E-14 -6.228797953855822E-13 -8.133730893459066E-15 -2.683175427243975E-14 -4.45369357421459E-15
tp 4.047495974661515E-13 -6.228797953855822E-13 8.62881583309303E-9 -1.049518336762922E-11 1.567713586384785E-9 4.6962987402728E-13
node 2.167848644861227E-15 -8.133730893459066E-15 -1.049518336762922E-11 3.431129102353477E-10 -3.368162037305538E-10 -2.430610423655096E-11
peri 3.741716310664903E-14 -2.683175427243975E-14 1.567713586384785E-9 -3.368162037305538E-10 6.237753710320591E-10 2.377921633477766E-11
i 1.81807188623565E-15 -4.45369357421459E-15 4.6962987402728E-13 -2.430610423655096E-11 2.377921633477766E-11 2.688860285305266E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0   n/a MPO439464  
diameter diameter 4.987 km 0.651 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.196   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

55733 Lepsius           Discovered 1986 Nov. 27 by F. Börngen at Tautenburg.
German Karl Richard Lepsius (1810-1884) studied the monuments, pyramids and mastabas of the Old Kingdom (c. 2686-c. 2160 BC) in Egypt and Sudan. He did much to catalogue archaeological remains and to establish a chronology for Egyptian history.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030806/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1986 WS2 = 2001 OK16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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