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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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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1994897006410916 4.2658e-08  
a 2.798899521875128 1.3121e-08 au
q 2.240547894131764 1.1924e-07 au
i 3.475944314911066 5.1119e-06 deg
node 53.97011735338989 7.3705e-05 deg
peri 19.35813504580454 7.5187e-05 deg
M 189.742706782998 1.298e-05 deg
tp 2460205.377234633280
(2023-Sep-17.87723463)
6.3245e-05 TDB
period 1710.327933481452
4.68
1.2026e-05
3.293e-08
d
yr
n .2104859500640928 1.4801e-09 deg/d
Q 3.357251149618491 1.5738e-08 au
  Orbit Determination Parameters
   # obs. used (total)      814  
   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      .53379  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:17:44  

Additional Information
 Earth MOID = 1.25554 au 
 Jupiter MOID = 1.93555 au 
 T_jup = 3.294 
[ show covariance matrix ]

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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