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91423 (1999 OT4)
Classification: Main-belt Asteroid          SPK-ID: 2091423
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .117560206022399 4.8553e-08  
a 2.668689713123798 1.8209e-08 au
q 2.354958000639107 1.343e-07 au
i 4.313226394860199 4.9912e-06 deg
node 292.6222440144383 7.3186e-05 deg
peri 22.78935594699803 7.7507e-05 deg
M 270.2777870996202 2.901e-05 deg
tp 2459397.365205849729
(2021-Jul-01.86520585)
0.00012985 TDB
period 1592.375728232822
4.36
1.6297e-05
4.462e-08
d
yr
n .2260772967191096 2.3138e-09 deg/d
Q 2.982421425608488 2.0349e-08 au
  Orbit Determination Parameters
   # obs. used (total)      634  
   data-arc span      7593 days (20.79 yr)  
   first obs. used      1999-07-16  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56675  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:39:57  

Additional Information
 Earth MOID = 1.34182 au 
 Jupiter MOID = 2.2693 au 
 T_jup = 3.368 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457351.5 (2015-Nov-25.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1164500790916836 4.8544e-08  
q 2.358869127963116 1.3407e-07 au
tp 2457803.956220220156
(2017-Feb-19.45622022)
0.00012547 TDB
node 292.6473057144005 7.3193e-05 deg
peri 22.63708450833901 7.7586e-05 deg
i 4.312153523184146 4.9903e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      634  
   data-arc span      7593 days (20.79 yr)  
   first obs. used      1999-07-16  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56675  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:39:57  

Additional Information
 Jupiter MOID = 2.2693 au 
 T_jup = 3.368 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.356504395975962E-15 -6.463323433524293E-15 3.619554583609753E-13 -6.68276388768997E-16 1.18606710091289E-13 8.95595092681151E-16
q -6.463323433524293E-15 1.797364483834766E-14 -3.987880245713721E-13 -3.604835010641761E-16 -2.165921032833518E-13 -1.957850060066684E-15
tp 3.619554583609753E-13 -3.987880245713721E-13 1.574326616732958E-8 7.939825828377636E-12 3.265344300381956E-9 3.778462457924902E-12
node -6.68276388768997E-16 -3.604835010641761E-16 7.939825828377636E-12 5.35723258708205E-9 -5.340176713308621E-9 4.329994052910608E-11
peri 1.18606710091289E-13 -2.165921032833518E-13 3.265344300381956E-9 -5.340176713308621E-9 6.019572756589895E-9 -4.238238188504672E-11
i 8.95595092681151E-16 -1.957850060066684E-15 3.778462457924902E-12 4.329994052910608E-11 -4.238238188504672E-11 2.490293272481771E-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 15.4   n/a MPO320101  

91423 (1999 OT4)          Discovered 1999-Jul-16 by LINEAR at Socorro
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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