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JPL Small-Body Database Browser
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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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1995599510299879 4.4333e-08  
a 2.799107917461711 1.3928e-08 au
q 2.240518078525401 1.2485e-07 au
i 3.475911369034759 5.4104e-06 deg
node 53.971802515238 7.7684e-05 deg
peri 19.44385910591308 7.9278e-05 deg
M 106.2676974778092 1.3241e-05 deg
tp 2458495.575247972085
(2019-Jan-12.07524797)
6.2691e-05 TDB
period 1710.518953965357
4.68
1.2767e-05
3.495e-08
d
yr
n .2104624442573063 1.5709e-09 deg/d
Q 3.357697756398022 1.6708e-08 au
  Orbit Determination Parameters
   # obs. used (total)      740  
   data-arc span      8313 days (22.76 yr)  
   first obs. used      1997-05-01  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53143  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:33:56  

Additional Information
 Earth MOID = 1.25572 au 
 Jupiter MOID = 1.93358 au 
 T_jup = 3.294 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456948.5 (2014-Oct-18.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1991882967464373 4.4252e-08  
q 2.243563747530375 1.2466e-07 au
tp 2456786.964845358713
(2014-May-09.46484536)
6.3986e-05 TDB
node 54.03295912469778 7.7693e-05 deg
peri 20.00190282490506 7.929e-05 deg
i 3.475133722841706 5.4076e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      740  
   data-arc span      8313 days (22.76 yr)  
   first obs. used      1997-05-01  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53143  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:33:56  

Additional Information
 Jupiter MOID = 1.93358 au 
 T_jup = 3.294 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.958266178105996E-15 -5.493827736156449E-15 -7.623343329023278E-13 5.349302614174329E-15 -2.093780080640335E-13 -3.663121441495367E-16
q -5.493827736156449E-15 1.553993711251441E-14 1.978605870234972E-12 -1.97795548098783E-14 5.555040806130366E-13 1.333506176361727E-15
tp -7.623343329023278E-13 1.978605870234972E-12 4.094242524858905E-9 2.174343157799003E-12 1.031818322411312E-9 -1.840941304870135E-12
node 5.349302614174329E-15 -1.97795548098783E-14 2.174343157799003E-12 6.036207197195542E-9 -6.024396228812151E-9 -4.884572541443457E-11
peri -2.093780080640335E-13 5.555040806130366E-13 1.031818322411312E-9 -6.024396228812151E-9 6.286856602078049E-9 4.834136922004053E-11
i -3.663121441495367E-16 1.333506176361727E-15 -1.840941304870135E-12 -4.884572541443457E-11 4.834136922004053E-11 2.924161599911928E-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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