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11988 (1995 WB)
Classification: Main-belt Asteroid          SPK-ID: 2011988
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .117625737208014 3.5561e-08  
a 2.632024226556138 1.0616e-08 au
q 2.322430436558119 9.3641e-08 au
i 2.454567936869757 3.5268e-06 deg
node 107.997485259139 0.000101 deg
peri 323.6741703767407 0.00010244 deg
M 168.0435919481005 1.8274e-05 deg
tp 2457872.464249896355
(2017-Apr-28.96424990)
7.7523e-05 TDB
period 1559.671910121145
4.27
9.4362e-06
2.583e-08
d
yr
n .2308177749845079 1.3965e-09 deg/d
Q 2.941618016554156 1.1865e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1683  
   data-arc span      14903 days (40.80 yr)  
   first obs. used      1978-11-29  
   last obs. used      2019-09-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51868  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:10:55  

Additional Information
 Earth MOID = 1.33741 au 
 Jupiter MOID = 2.30108 au 
 T_jup = 3.388 
[ 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 13.8   n/a MPO302139  
diameter diameter 4.814 km 0.202 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.277   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11988 (1995 WB)          Discovered 1995-Nov-16 by Kobayashi, T. at Oizumi
Reference: 19991026/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1995 WB = 1978 WP11 = 1982 UX1 = 1986 TS14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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