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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08161166286053982 5.6433e-08  
a 3.229132134219942 2.4781e-08 au
q 2.965597291149849 1.9005e-07 au
i 11.45667531212106 5.9045e-06 deg
node 24.32293379645252 1.8738e-05 deg
peri 345.7096714621576 3.3764e-05 deg
M 208.8746678562612 3.1365e-05 deg
tp 2459890.237548919861
(2022-Nov-06.73754892)
0.00019081 TDB
period 2119.469403756214
5.80
2.4398e-05
6.68e-08
d
yr
n .1698538319836052 1.9552e-09 deg/d
Q 3.492666977290036 2.6803e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1153  
   data-arc span      7640 days (20.92 yr)  
   first obs. used      1999-08-14  
   last obs. used      2020-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52868  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:39:56  

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

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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