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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 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 
[ 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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