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91595 (1999 TZ9)
Classification: Main-belt Asteroid          SPK-ID: 2091595
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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1995599506459303 4.2572e-08  
a 2.799107917443028 1.327e-08 au
q 2.240518079585464 1.1892e-07 au
i 3.475912970952337 5.1149e-06 deg
node 53.97182532745293 7.3878e-05 deg
peri 19.44383631142042 7.5356e-05 deg
M 106.2676974921613 1.2883e-05 deg
tp 2458495.575247908948
(2019-Jan-12.07524791)
6.0699e-05 TDB
period 1710.518953948231
4.68
1.2164e-05
3.33e-08
d
yr
n .2104624442594136 1.4966e-09 deg/d
Q 3.357697755300591 1.5918e-08 au
  Orbit Determination Parameters
   # obs. used (total)      809  
   data-arc span      8425 days (23.07 yr)  
   first obs. used      1997-05-01  
   last obs. used      2020-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52927  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:39:18  

Additional Information
 Earth MOID = 1.25572 au 
 Jupiter MOID = 1.93358 au 
 T_jup = 3.294 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457252.5 (2015-Aug-18.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1995267663619908 4.2385e-08  
q 2.241312628630353 1.1838e-07 au
tp 2456786.414055163044
(2014-May-08.91405516)
6.0801e-05 TDB
node 53.98610668824285 7.3882e-05 deg
peri 19.82228163534588 7.5364e-05 deg
i 3.475777531480245 5.114e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      809  
   data-arc span      8425 days (23.07 yr)  
   first obs. used      1997-05-01  
   last obs. used      2020-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52927  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:39:18  

Additional Information
 Jupiter MOID = 1.93358 au 
 T_jup = 3.294 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.796513196996422E-15 -4.997571336866793E-15 -1.012379609893306E-12 5.074593098329417E-15 -2.850300773803174E-13 1.250170676758926E-17
q -4.997571336866793E-15 1.401482057674821E-14 2.757112501253207E-12 -1.933537785613568E-14 7.903167192819834E-13 3.255924538484805E-16
tp -1.012379609893306E-12 2.757112501253207E-12 3.696743235102149E-9 -3.22776941850275E-12 9.198658251850367E-10 -1.630810599253068E-12
node 5.074593098329417E-15 -1.933537785613568E-14 -3.22776941850275E-12 5.458505022986732E-9 -5.449416930022889E-9 -9.038464709166445E-11
peri -2.850300773803174E-13 7.903167192819834E-13 9.198658251850367E-10 -5.449416930022889E-9 5.679800629334586E-9 8.987862278236851E-11
i 1.250170676758926E-17 3.255924538484805E-16 -1.630810599253068E-12 -9.038464709166445E-11 8.987862278236851E-11 2.615260623119559E-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 15.2   n/a MPO337941  
diameter diameter 2.338 km 0.398 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.295   0.066 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91595 (1999 TZ9)          Discovered 1999-Oct-09 by Comba, P. G. at Prescott
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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Alternate Designations
 1999 TZ9 = 1997 JW18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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