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85255 (1993 TZ13)
Classification: Main-belt Asteroid          SPK-ID: 2085255
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .203868141476154 4.9947e-08  
a 3.108147097327506 2.5781e-08 au
q 2.474494925160844 1.5395e-07 au
i 10.42500141965027 5.0793e-06 deg
node 185.7555788342663 2.8779e-05 deg
peri 190.7193114000733 3.1029e-05 deg
M 249.2475272598596 1.3155e-05 deg
tp 2459216.246148180165
(2021-Jan-01.74614818)
7.7553e-05 TDB
period 2001.477780680911
5.48
2.4902e-05
6.818e-08
d
yr
n .1798670979387673 2.2379e-09 deg/d
Q 3.741799269494167 3.1037e-08 au
  Orbit Determination Parameters
   # obs. used (total)      651  
   data-arc span      13458 days (36.85 yr)  
   first obs. used      1982-10-19  
   last obs. used      2019-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55029  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:53:42  

Additional Information
 Earth MOID = 1.47572 au 
 Jupiter MOID = 1.71821 au 
 T_jup = 3.162 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457320.5 (2015-Oct-25.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2081513484223696 5.0438e-08  
q 2.453690939966138 1.5618e-07 au
tp 2457219.362809326301
(2015-Jul-15.86280933)
6.4105e-05 TDB
node 185.8872144289463 2.8662e-05 deg
peri 190.5806426541886 3.0791e-05 deg
i 10.45898074323119 5.0943e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      651  
   data-arc span      13458 days (36.85 yr)  
   first obs. used      1982-10-19  
   last obs. used      2019-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55029  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:53:42  

Additional Information
 Jupiter MOID = 1.71821 au 
 T_jup = 3.162 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.543957169331295E-15 -7.813071550033733E-15 1.49545285843408E-12 1.920794642313336E-14 2.365290219923468E-13 4.449496176053445E-17
q -7.813071550033733E-15 2.439132786007017E-14 -4.276823401221392E-12 -5.910034167054734E-14 -6.680352377123361E-13 6.764649316964528E-16
tp 1.49545285843408E-12 -4.276823401221392E-12 4.109403587376401E-9 8.744176441351671E-12 7.642386136985928E-10 6.943362019624514E-13
node 1.920794642313336E-14 -5.910034167054734E-14 8.744176441351671E-12 8.214992216302427E-10 -8.060943676103469E-10 5.860686389428622E-11
peri 2.365290219923468E-13 -6.680352377123361E-13 7.642386136985928E-10 -8.060943676103469E-10 9.481026585041286E-10 -5.756646601954934E-11
i 4.449496176053445E-17 6.764649316964528E-16 6.943362019624514E-13 5.860686389428622E-11 -5.756646601954934E-11 2.595230312343978E-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 14.5   n/a MPO439613  
diameter diameter 7.050 km 1.908 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.050   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

85255 (1993 TZ13)          Discovered 1993-Oct-09 by Elst, E. W. at La Silla
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1993 TZ13 = 1982 UC4 = 1998 QS79 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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