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91425 (1999 PM2)
Classification: Main-belt Asteroid          SPK-ID: 2091425
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08779249085164707 3.5198e-08  
a 2.844350012838062 1.6676e-08 au
q 2.594637440357094 1.0169e-07 au
i 1.058048763642445 3.9303e-06 deg
node 328.8644011974401 0.00021671 deg
peri 36.80401833499629 0.0002179 deg
M 97.20060350133087 2.2877e-05 deg
tp 2458527.414710464845
(2019-Feb-12.91471046)
0.0001113 TDB
period 1752.156860119945
4.80
1.5409e-05
4.219e-08
d
yr
n .2054610567089045 1.8069e-09 deg/d
Q 3.09406258531903 1.814e-08 au
  Orbit Determination Parameters
   # obs. used (total)      900  
   data-arc span      7483 days (20.49 yr)  
   first obs. used      1999-08-07  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54785  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:29:51  

Additional Information
 Earth MOID = 1.59278 au 
 Jupiter MOID = 2.33846 au 
 T_jup = 3.302 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456840.5 (2014-Jul-02.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08717071195523718 3.5191e-08  
q 2.595341058413838 1.0144e-07 au
tp 2456763.361077330128
(2014-Apr-15.86107733)
0.00011329 TDB
node 329.1714131978327 0.00021505 deg
peri 34.18357967142633 0.0002163 deg
i 1.064724164849026 3.9366e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      900  
   data-arc span      7483 days (20.49 yr)  
   first obs. used      1999-08-07  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54785  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:29:51  

Additional Information
 Jupiter MOID = 2.33846 au 
 T_jup = 3.302 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.238402987182478E-15 -3.52992374891245E-15 5.830578832416503E-14 -8.696008052121423E-15 -2.95003003732437E-16 -6.19561112599484E-17
q -3.52992374891245E-15 1.028968339952394E-14 -3.604436467394052E-13 2.177804293070822E-14 -3.424990720983176E-14 2.516906589429101E-16
tp 5.830578832416503E-14 -3.604436467394052E-13 1.283361391571543E-8 -6.411394147323146E-12 2.656116906180575E-9 -4.203595232437917E-13
node -8.696008052121423E-15 2.177804293070822E-14 -6.411394147323146E-12 4.624575490818285E-8 -4.623837667506819E-8 -3.458389724318526E-11
peri -2.95003003732437E-16 -3.424990720983176E-14 2.656116906180575E-9 -4.623837667506819E-8 4.678654075478762E-8 3.448837124002538E-11
i -6.19561112599484E-17 2.516906589429101E-16 -4.203595232437917E-13 -3.458389724318526E-11 3.448837124002538E-11 1.549651526553239E-11

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 15.0   n/a MPO449561  
diameter diameter 3.082 km 0.655 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.186   0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91425 (1999 PM2)          Discovered 1999-Aug-07 by Spacewatch at Kitt Peak
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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