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499998 (2011 PT)
Classification: Amor [NEO]          SPK-ID: 2499998
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2457233.5 (2015-Jul-30.0) TDB
Reference: JPL 53 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2147190642794475 9.5171e-09  
a 1.312353520088347 9.3597e-10 au
q 1.030566200251138 1.2394e-08 au
i 2.212869726515889 1.2323e-06 deg
node 71.08587250871039 2.8807e-05 deg
peri 298.7969729860851 3.3081e-05 deg
M 196.4432274366918 6.9146e-06 deg
tp 2457482.982862817266
(2016-Apr-04.48286282)
1.0562e-05 TDB
period 549.1293891816762
1.50
5.8746e-07
1.608e-09
d
yr
n .6555831960414272 7.0134e-10 deg/d
Q 1.594140839925556 1.1369e-09 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -2.236749230606609E-13 3.021E-14
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
  Orbit Determination Parameters
   # obs. used (total)      205  
   data-arc span      2300 days (6.30 yr)  
   first obs. used      2011-08-01  
   last obs. used      2017-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52124  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Feb-09 06:33:06  

Additional Information
 Earth MOID = .0459459 au 
 Jupiter MOID = 3.85965 au 
 T_jup = 4.945 
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Orbit Covariance (7×7)
  e q tp node peri i A2
e 9.057424766922124E-17 -1.177499587847733E-16 2.234637491371336E-14 -3.61827034739496E-14 5.480655927563217E-14 -1.917767362833128E-15 -8.859802099300293E-23
q -1.177499587847733E-16 1.536058958011235E-16 -2.878824891041662E-14 4.757839145539696E-14 -7.187927100032479E-14 2.554572669290178E-15 1.179077956797388E-22
tp 2.234637491371336E-14 -2.878824891041662E-14 1.115627135678334E-10 -8.323700701395741E-11 1.909984551605299E-10 2.618747548804374E-12 -9.579058628461532E-22
node -3.61827034739496E-14 4.757839145539696E-14 -8.323700701395741E-11 8.298346446318018E-10 -9.094555067682259E-10 -1.283923049173144E-11 -1.347614038002929E-20
peri 5.480655927563217E-14 -7.187927100032479E-14 1.909984551605299E-10 -9.094555067682259E-10 1.094333192937105E-9 1.53696167356275E-11 3.489956957679941E-20
i -1.917767362833128E-15 2.554572669290178E-15 2.618747548804374E-12 -1.283923049173144E-11 1.53696167356275E-11 1.518452233352402E-12 5.23645573590276E-21
A2 -8.859802099300293E-23 1.179077956797388E-22 -9.579058628461532E-22 -1.347614038002929E-20 3.489956957679941E-20 5.23645573590276E-21 9.12782887830951E-28

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 23.9   n/a MPCxxxxx  

499998 (2011 PT)          Discovered 2011-Aug-01 by Pan-STARRS 1 at Haleakala
Reference: Last Updated: 2017-10-09

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