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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1151400956293707 4.8633e-08  
a 2.977791486650601 2.1213e-08 au
q 2.634928290113325 1.4438e-07 au
i 12.32572947925041 5.4418e-06 deg
node 64.11630275639601 2.2376e-05 deg
peri 338.0332343017985 3.0884e-05 deg
M 106.8916907002084 2.0725e-05 deg
tp 2458043.209938121434
0.00010731 TDB
period 1876.894461693575
n .191806202931177 2.0495e-09 deg/d
Q 3.320654683187878 2.3655e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1029  
   data-arc span      11873 days (32.51 yr)  
   first obs. used      1986-11-27  
   last obs. used      2019-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53652  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:21:37  

Additional Information
 Earth MOID = 1.64826 au 
 Jupiter MOID = 2.06664 au 
 T_jup = 3.216 
[ show covariance matrix ]

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] (  
geometric albedo albedo 0.196   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2118-Mar-31 03:08 00:01 Psych 0.0498388648366495 0.0498298311725664 0.0498479076895791 3.48074851407658 3.48074844433169 2494732.630286006 1.07836847275406 1161.30007739822 41.9879262201162 67.2841312551486 163618.710350768 T 26 CATAB v2.0e-lin.ifort 2019-Jul-13 03:21:41 2019-Jul-13 03:21

Alternate Designations
 1986 WS2 = 2001 OK16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2019-Dec-10 06:33 UT
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