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79509 (1998 HT136)
Classification: Outer Main-belt Asteroid          SPK-ID: 2079509
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09523910535225287 5.7238e-08  
a 3.212984532082816 3.0062e-08 au
q 2.906982759736621 1.9351e-07 au
i 6.122835458456421 5.5168e-06 deg
node 128.5591146479882 4.9175e-05 deg
peri 60.95826615487794 5.5555e-05 deg
M 311.2271052660116 2.7434e-05 deg
tp 2459285.495111443695
(2021-Mar-11.99511144)
0.00016223 TDB
period 2103.59136318051
5.76
2.9523e-05
8.083e-08
d
yr
n .1711358994437496 2.4018e-09 deg/d
Q 3.51898630442901 3.2925e-08 au
  Orbit Determination Parameters
   # obs. used (total)      561  
   data-arc span      21757 days (59.57 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58868  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:41:37  

Additional Information
 Earth MOID = 1.91442 au 
 Jupiter MOID = 1.4653 au 
 T_jup = 3.175 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456758.5 (2014-Apr-11.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09842518716800275 5.6843e-08  
q 2.899259061902525 1.9403e-07 au
tp 2457179.850944790704
(2015-Jun-06.35094479)
0.00014495 TDB
node 128.5935889143495 4.9192e-05 deg
peri 60.54536242766821 5.5163e-05 deg
i 6.120506602772473 5.5117e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      561  
   data-arc span      21757 days (59.57 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58868  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:41:37  

Additional Information
 Jupiter MOID = 1.4653 au 
 T_jup = 3.175 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.231151875015041E-15 -1.092945424060515E-14 -2.37889637289593E-12 1.076157008954072E-14 -3.683035777456193E-13 -1.718119041500047E-15
q -1.092945424060515E-14 3.764846240363801E-14 9.104594352043814E-12 -4.589967843185287E-14 1.410432162354271E-12 5.370426014762834E-15
tp -2.37889637289593E-12 9.104594352043814E-12 2.100967590050304E-8 -3.251898734453397E-11 3.654774220848007E-9 1.757898939620058E-12
node 1.076157008954072E-14 -4.589967843185287E-14 -3.251898734453397E-11 2.419835719594429E-9 -2.411270337551737E-9 8.525203642491309E-11
peri -3.683035777456193E-13 1.410432162354271E-12 3.654774220848007E-9 -2.411270337551737E-9 3.042922154233414E-9 -8.454540891033404E-11
i -1.718119041500047E-15 5.370426014762834E-15 1.757898939620058E-12 8.525203642491309E-11 -8.454540891033404E-11 3.037908830282612E-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 14.7   n/a MPO459362  
diameter diameter 5.921 km 0.471 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.080   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

79509 (1998 HT136)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

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