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91427 (1999 PB5)
Classification: Outer Main-belt Asteroid          SPK-ID: 2091427
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08161166299986426 5.6451e-08  
a 3.229132134281442 2.4783e-08 au
q 2.965597290756433 1.901e-07 au
i 11.45667534577272 5.9062e-06 deg
node 24.3229335307824 1.8763e-05 deg
peri 345.7096716142347 3.3781e-05 deg
M 208.8746679362047 3.1367e-05 deg
tp 2459890.237548474619
(2022-Nov-06.73754847)
0.00019083 TDB
period 2119.469403816763
5.80
2.44e-05
6.68e-08
d
yr
n .1698538319787529 1.9554e-09 deg/d
Q 3.492666977806451 2.6806e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1145  
   data-arc span      7613 days (20.84 yr)  
   first obs. used      1999-08-14  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52755  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:39:36  

Additional Information
 Earth MOID = 1.96746 au 
 Jupiter MOID = 1.97172 au 
 T_jup = 3.150 
[ 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 13.6   n/a MPC47786  
diameter diameter 6.129 km 0.573 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.908 h n/a LCDB (Rev. 2019-August); 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 0.187   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91427 (1999 PB5)          Discovered 1999-Aug-14 by Kusnirak, P., Pravec, P. at Ondrejov
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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