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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1995599529684551 4.2873e-08  
a 2.799107916586757 1.3393e-08 au
q 2.240518072399074 1.1994e-07 au
i 3.475912128730316 5.161e-06 deg
node 53.97180901041088 7.5129e-05 deg
peri 19.44385387460941 7.6627e-05 deg
M 106.2676968016008 1.2961e-05 deg
tp 2458495.575251421797
(2019-Jan-12.07525142)
6.1127e-05 TDB
period 1710.518953163338
4.68
1.2277e-05
3.361e-08
d
yr
n .2104624443559869 1.5105e-09 deg/d
Q 3.357697760774441 1.6066e-08 au
  Orbit Determination Parameters
   # obs. used (total)      799  
   data-arc span      8395 days (22.98 yr)  
   first obs. used      1997-05-01  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53033  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:42:22  

Additional Information
 Earth MOID = 1.25572 au 
 Jupiter MOID = 1.93358 au 
 T_jup = 3.294 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457154.5 (2015-May-12.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1994350283176712 4.2682e-08  
q 2.242242567988328 1.1949e-07 au
tp 2456786.622071693569
(2014-May-09.12207169)
6.1504e-05 TDB
node 53.99503046450656 7.5143e-05 deg
peri 19.90007196876698 7.6645e-05 deg
i 3.475334188465328 5.159e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      799  
   data-arc span      8395 days (22.98 yr)  
   first obs. used      1997-05-01  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53033  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:42:22  

Additional Information
 Jupiter MOID = 1.93358 au 
 T_jup = 3.294 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.821754226266115E-15 -5.079386544079405E-15 -9.657109091439643E-13 5.935510642579495E-15 -2.717772602569506E-13 1.941579706370997E-18
q -5.079386544079405E-15 1.427783966154051E-14 2.611051312812664E-12 -2.195640975923405E-14 7.488115658751939E-13 3.134360945332403E-16
tp -9.657109091439643E-13 2.611051312812664E-12 3.782713608810314E-9 -4.145736038284907E-12 9.454872046349773E-10 -1.789311351871529E-12
node 5.935510642579495E-15 -2.195640975923405E-14 -4.145736038284907E-12 5.646395670341805E-9 -5.63715551818317E-9 -8.091591190591562E-11
peri -2.717772602569506E-13 7.488115658751939E-13 9.454872046349773E-10 -5.63715551818317E-9 5.87452664287583E-9 8.038185077364564E-11
i 1.941579706370997E-18 3.134360945332403E-16 -1.789311351871529E-12 -8.091591190591562E-11 8.038185077364564E-11 2.661538332255623E-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

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