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18501 (1996 OB)
Classification: Main-belt Asteroid          SPK-ID: 2018501
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03895162017675471 3.0158e-08  
a 2.286461149280635 7.7569e-09 au
q 2.19739978304495 6.8927e-08 au
i 3.058633590418502 3.2673e-06 deg
node 240.2751432784398 6.8256e-05 deg
peri 63.14418969638582 8.4276e-05 deg
M 17.85200929359709 5.0773e-05 deg
tp 2459137.877735245099
(2020-Oct-15.37773525)
0.00017804 TDB
period 1262.827894664507
3.46
6.4263e-06
1.759e-08
d
yr
n .2850744757231076 1.4507e-09 deg/d
Q 2.375522515516321 8.0591e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1794  
   data-arc span      8909 days (24.39 yr)  
   first obs. used      1996-07-16  
   last obs. used      2020-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52709  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:38:34  

Additional Information
 Earth MOID = 1.18194 au 
 Jupiter MOID = 2.68788 au 
 T_jup = 3.599 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.91   n/a E2021B10  
diameter diameter 2.799 km 0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.418 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.326   0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18501 (1996 OB)          Discovered 1996-Jul-16 by Farra d'Isonzo at Farra d'Isonzo
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1996 OB = 1998 BH19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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