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101805 (1999 JT4)
Classification: Inner Main-belt Asteroid          SPK-ID: 2101805
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09274430316789342 3.8387e-08  
a 1.939683550981388 6.3899e-09 au
q 1.759788951679395 7.5646e-08 au
i 22.0077603566244 5.2758e-06 deg
node 49.09437687214821 1.106e-05 deg
peri 76.08251343846406 3.4675e-05 deg
M 91.28754348118235 3.1029e-05 deg
tp 2458950.290513889259
(2020-Apr-10.79051389)		 8.4817e-05 TDB
period 986.7218633003815
2.70		 4.8758e-06
1.335e-08		 d
yr
n .3648444545414998 1.8029e-09 deg/d
Q 2.119578150283382 6.9825e-09 au
   Orbit Determination Parameters
   # obs. used (total)      835  
   data-arc span      7735 days (21.18 yr)  
   first obs. used      1999-04-19  
   last obs. used      2020-06-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47296  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:38:42  

Additional Information
 Earth MOID = .85827 au 
 Jupiter MOID = 3.02606 au 
 T_jup = 3.810 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.02   n/a E2021B55  

101805 (1999 JT4)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 JT4 = 2000 SP227 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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