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187993 (2001 SZ55)
Classification: Main-belt Asteroid          SPK-ID: 2187993
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2329903625507526 5.4118e-08  
a 2.406557707572672 8.5114e-09 au
q 1.845852954786007 1.2828e-07 au
i 5.550891061998208 6.4459e-06 deg
node 104.4049131371587 4.7253e-05 deg
peri 292.1763237698353 4.9132e-05 deg
M 47.59709413102428 1.2746e-05 deg
tp 2459020.210354131105
(2020-Jun-19.71035413)
4.7906e-05 TDB
period 1363.61838254527
3.73
7.2342e-06
1.981e-08
d
yr
n .264003481185139 1.4006e-09 deg/d
Q 2.967262460359337 1.0494e-08 au
  Orbit Determination Parameters
   # obs. used (total)      467  
   data-arc span      7087 days (19.40 yr)  
   first obs. used      2001-09-16  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56619  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:57:39  

Additional Information
 Earth MOID = .860798 au 
 Jupiter MOID = 2.47427 au 
 T_jup = 3.479 
[ 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 16.7   n/a MPO440045  
diameter diameter 2.654 km 0.556 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.052   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

187993 (2001 SZ55)          Discovered 2001-Sep-16 by LINEAR at Socorro
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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