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JPL Small-Body Database Browser
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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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08161169137627175 6.3933e-08  
a 3.229132142134554 2.6749e-08 au
q 2.965597206337469 2.0986e-07 au
i 11.4566754818855 6.0348e-06 deg
node 24.32289274828811 2.5874e-05 deg
peri 345.7096556552573 4.1188e-05 deg
M 208.8747134290442 3.3295e-05 deg
tp 2459890.237283885097
(2022-Nov-06.73728389)
0.00020083 TDB
period 2119.469411548453
5.80
2.6335e-05
7.21e-08
d
yr
n .1698538313591369 2.1105e-09 deg/d
Q 3.492667077931638 2.8932e-08 au
  Orbit Determination Parameters
   # obs. used (total)      935  
   data-arc span      7207 days (19.73 yr)  
   first obs. used      1999-08-14  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54818  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:03:59  

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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