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JPL Small-Body Database Browser
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312995 (1999 TA191)
Classification: Main-belt Asteroid          SPK-ID: 2312995
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1349913160419956 5.625e-08  
a 3.061442000149539 3.767e-08 au
q 2.648173915563114 1.6853e-07 au
i 10.36811770235358 7.2005e-06 deg
node 337.3227626772861 3.042e-05 deg
peri 51.4994258324514 3.8918e-05 deg
M 239.9185732101452 2.4012e-05 deg
tp 2459253.120662260095
(2021-Feb-07.62066226)
0.00013346 TDB
period 1956.534367507063
5.36
3.6112e-05
9.887e-08
d
yr
n .1839988123790013 3.396e-09 deg/d
Q 3.474710084735965 4.2755e-08 au
  Orbit Determination Parameters
   # obs. used (total)      285  
   data-arc span      6764 days (18.52 yr)  
   first obs. used      1999-10-12  
   last obs. used      2018-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67475  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 13:35:15  

Additional Information
 Earth MOID = 1.66575 au 
 Jupiter MOID = 2.07886 au 
 T_jup = 3.195 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456725.5 (2014-Mar-09.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .138722333959053 5.6935e-08  
q 2.631612778085687 1.7181e-07 au
tp 2457296.442137194190
(2015-Sep-30.94213719)
0.00012166 TDB
node 337.6335707726196 3.0349e-05 deg
peri 50.70316215636218 3.8233e-05 deg
i 10.39230901241682 7.2115e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      285  
   data-arc span      6764 days (18.52 yr)  
   first obs. used      1999-10-12  
   last obs. used      2018-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67475  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 13:35:15  

Additional Information
 Jupiter MOID = 2.07886 au 
 T_jup = 3.195 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.241598617412279E-15 -9.620686748228916E-15 -1.618235690809375E-12 1.962071299877788E-14 -4.050164591780663E-13 -7.273266128362537E-15
q -9.620686748228916E-15 2.951757797310946E-14 5.139106093074155E-12 -5.981346243792953E-14 1.201419664320066E-12 2.252322210959252E-14
tp -1.618235690809375E-12 5.139106093074155E-12 1.480037956673408E-8 -7.509745800928415E-12 2.839485170233813E-9 1.028447474065451E-11
node 1.962071299877788E-14 -5.981346243792953E-14 -7.509745800928415E-12 9.210744863621158E-10 -9.074295800438952E-10 6.68942269769006E-13
peri -4.050164591780663E-13 1.201419664320066E-12 2.839485170233813E-9 -9.074295800438952E-10 1.461753291197211E-9 1.347036853228537E-12
i -7.273266128362537E-15 2.252322210959252E-14 1.028447474065451E-11 6.68942269769006E-13 1.347036853228537E-12 5.200583313938599E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO434006  

312995 (1999 TA191)          Discovered 1999-Oct-12 by LINEAR at Socorro
Reference: 20120207/Numbers.arcLast Updated: 2012-02-09

Alternate Designations
 1999 TA191 = 2004 PA97 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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