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80387 (1999 XG168)
Classification: Main-belt Asteroid          SPK-ID: 2080387
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2401526862071904 4.6914e-08  
a 2.361157158431633 7.1715e-09 au
q 1.79411892427694 1.0953e-07 au
i 2.089519807870157 4.8267e-06 deg
node 359.1865624495759 0.00010407 deg
peri 30.90335449155759 0.00010446 deg
M 262.5077441843016 7.7587e-06 deg
tp 2459359.383413860249
(2021-May-24.88341386)
2.9228e-05 TDB
period 1325.213248054578
3.63
6.0376e-06
1.653e-08
d
yr
n .2716543926258528 1.2376e-09 deg/d
Q 2.928195392586326 8.8938e-09 au
  Orbit Determination Parameters
   # obs. used (total)      893  
   data-arc span      9114 days (24.95 yr)  
   first obs. used      1995-08-01  
   last obs. used      2020-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5084  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:19:46  

Additional Information
 Earth MOID = .799821 au 
 Jupiter MOID = 2.52171 au 
 T_jup = 3.511 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456570.5 (2013-Oct-05.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2396259133958638 4.6662e-08  
q 1.794880163128527 1.0859e-07 au
tp 2456711.388399476704
(2014-Feb-22.88839948)
2.7024e-05 TDB
node 359.2646666998162 0.00010408 deg
peri 31.06590916318471 0.00010447 deg
i 2.09024136239695 4.8247e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      893  
   data-arc span      9114 days (24.95 yr)  
   first obs. used      1995-08-01  
   last obs. used      2020-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5084  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:19:46  

Additional Information
 Jupiter MOID = 2.52171 au 
 T_jup = 3.511 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.177379935880559E-15 -5.060922434130207E-15 -2.922638223274151E-13 2.818196796024494E-14 -1.715944364216125E-13 -2.185612464273389E-15
q -5.060922434130207E-15 1.17918554629824E-14 6.825395302433457E-13 -6.513033519228832E-14 3.976346184871862E-13 5.141155504850916E-15
tp -2.922638223274151E-13 6.825395302433457E-13 7.303120846258901E-10 -1.624985526717729E-12 2.517920563669161E-10 1.973642929351641E-13
node 2.818196796024494E-14 -6.513033519228832E-14 -1.624985526717729E-12 1.083172968059039E-8 -1.082511646414592E-8 1.003393811557395E-10
peri -1.715944364216125E-13 3.976346184871862E-13 2.517920563669161E-10 -1.082511646414592E-8 1.09142994926229E-8 -1.00172159793554E-10
i -2.185612464273389E-15 5.141155504850916E-15 1.973642929351641E-13 1.003393811557395E-10 -1.00172159793554E-10 2.327778616537902E-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 15.8   n/a MPO436342  

80387 (1999 XG168)          Discovered 1999-Dec-10 by LINEAR at Socorro
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ show close-approach data ]
Alternate Designations
 1999 XG168 = 2002 NF9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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