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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1995692661921432 4.2598e-08  
a 2.798779452052802 1.3212e-08 au
q 2.240229090572976 1.1899e-07 au
i 3.476073438722501 5.1122e-06 deg
node 53.97076891407819 7.3748e-05 deg
peri 19.39960795568247 7.5229e-05 deg
M 148.4229987792158 1.2922e-05 deg
tp 2458495.400927817265
(2019-Jan-11.90092782)
6.0589e-05 TDB
period 1710.217877778995
4.68
1.211e-05
3.316e-08
d
yr
n .2104994952266085 1.4905e-09 deg/d
Q 3.357329813532627 1.5848e-08 au
  Orbit Determination Parameters
   # obs. used (total)      813  
   data-arc span      8425 days (23.07 yr)  
   first obs. used      1997-05-01  
   last obs. used      2020-05-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52899  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:46:41  

Additional Information
 Earth MOID = 1.25493 au 
 Jupiter MOID = 1.93459 au 
 T_jup = 3.294 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457255.5 (2015-Aug-21.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1995301825366053 4.2385e-08  
q 2.241285427990639 1.1838e-07 au
tp 2456786.409268463427
(2014-May-08.90926846)
6.0745e-05 TDB
node 53.98593263891146 7.3754e-05 deg
peri 19.82024767762656 7.5239e-05 deg
i 3.475789873196397 5.111e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      813  
   data-arc span      8425 days (23.07 yr)  
   first obs. used      1997-05-01  
   last obs. used      2020-05-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52899  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:46:41  

Additional Information
 Jupiter MOID = 1.93459 au 
 T_jup = 3.294 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.796502096492679E-15 -4.997534719234343E-15 -1.012991716394383E-12 5.289602069744259E-15 -2.853724127742372E-13 3.689624217604473E-18
q -4.997534719234343E-15 1.401457900673028E-14 2.758008573546104E-12 -1.992297230499926E-14 7.911038624070485E-13 3.514887625860262E-16
tp -1.012991716394383E-12 2.758008573546104E-12 3.689951412365631E-9 -3.480385205731555E-12 9.187705220156835E-10 -1.616871650571066E-12
node 5.289602069744259E-15 -1.992297230499926E-14 -3.480385205731555E-12 5.439682832474993E-9 -5.430689172604993E-9 -8.962260584294829E-11
peri -2.853724127742372E-13 7.911038624070485E-13 9.187705220156835E-10 -5.430689172604993E-9 5.660901987473216E-9 8.912125380924924E-11
i 3.689624217604473E-18 3.514887625860262E-16 -1.616871650571066E-12 -8.962260584294829E-11 8.912125380924924E-11 2.612186620525445E-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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