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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1174919839370612 3.367e-08  
a 2.630476585850606 1.0525e-08 au
q 2.321416673079031 8.9153e-08 au
i 2.456177913497501 3.4729e-06 deg
node 107.9839397086296 9.7761e-05 deg
peri 324.4502219755791 9.9271e-05 deg
M 259.4732905079236 1.8583e-05 deg
tp 2459435.640046631644
(2021-Aug-09.14004663)
8.1488e-05 TDB
period 1558.296472438891
4.27
9.3528e-06
2.561e-08
d
yr
n .2310215073750143 1.3866e-09 deg/d
Q 2.93953649862218 1.1762e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1751  
   data-arc span      15223 days (41.68 yr)  
   first obs. used      1978-11-29  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51442  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:29:28  

Additional Information
 Earth MOID = 1.3367 au 
 Jupiter MOID = 2.29889 au 
 T_jup = 3.389 
[ 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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