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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08169610336220748 5.6381e-08  
a 3.229273095377583 2.4672e-08 au
q 2.96545406679282 1.9e-07 au
i 11.4564661980508 5.8933e-06 deg
node 24.32185570952843 1.8736e-05 deg
peri 345.6079272942191 3.3744e-05 deg
M 242.9666781836438 3.1572e-05 deg
tp 2459889.568852957440
(2022-Nov-06.06885296)
0.00019066 TDB
period 2119.608186922449
5.80
2.4291e-05
6.651e-08
d
yr
n .1698427106580955 1.9464e-09 deg/d
Q 3.493092123962346 2.6688e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1157  
   data-arc span      7640 days (20.92 yr)  
   first obs. used      1999-08-14  
   last obs. used      2020-07-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52905  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:45:46  

Additional Information
 Earth MOID = 1.96586 au 
 Jupiter MOID = 1.97248 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 13.63   n/a E2021B10  
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. 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 0.187   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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