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91112 (1998 HJ52)
Classification: Main-belt Asteroid          SPK-ID: 2091112
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1656962197835951 3.2169e-08  
a 2.567711159900369 9.8666e-09 au
q 2.142251127208728 8.3178e-08 au
i 7.762409789101987 4.8644e-06 deg
node 32.72922875547376 3.8224e-05 deg
peri 60.83400874263187 4.3289e-05 deg
M 283.6421197202971 2.1175e-05 deg
tp 2459519.263834772946
(2021-Oct-31.76383477)		 8.8996e-05 TDB
period 1502.857073793918
4.11		 8.6623e-06
2.372e-08		 d
yr
n .2395437372438822 1.3807e-09 deg/d
Q 2.993171192592011 1.1502e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1504  
   data-arc span      8298 days (22.72 yr)  
   first obs. used      1998-04-21  
   last obs. used      2021-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51342  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 07:56:38  

Additional Information
 Earth MOID = 1.17084 au 
 Jupiter MOID = 2.24079 au 
 T_jup = 3.399 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457204.5 (2015-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1657716935397515 3.1185e-08  
q 2.14248542486398 8.035e-08 au
tp 2456506.872210423748
(2013-Aug-02.37221042)		 8.4115e-05 TDB
node 32.93819715742502 3.8101e-05 deg
peri 59.62566209801261 4.3304e-05 deg
i 7.777207506140621 4.8662e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1504  
   data-arc span      8298 days (22.72 yr)  
   first obs. used      1998-04-21  
   last obs. used      2021-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51342  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 07:56:38  

Additional Information
 Jupiter MOID = 2.24079 au 
 T_jup = 3.399 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.725218815514422E-16 -2.492323852590702E-15 1.363039715672406E-12 6.513625665651698E-15 3.476022698898135E-13 -1.339894208042749E-15
q -2.492323852590702E-15 6.456185423854181E-15 -3.341105104746856E-12 -1.616236770197099E-14 -8.473529120087333E-13 3.609383061903037E-15
tp 1.363039715672406E-12 -3.341105104746856E-12 7.075249202018432E-9 3.364386567052232E-11 1.769590046628562E-9 -5.829703650287691E-12
node 6.513625665651698E-15 -1.616236770197099E-14 3.364386567052232E-11 1.451706885602054E-9 -1.429518045639967E-9 -1.212012774739111E-10
peri 3.476022698898135E-13 -8.473529120087333E-13 1.769590046628562E-9 -1.429518045639967E-9 1.875253995644515E-9 1.186499114573512E-10
i -1.339894208042749E-15 3.609383061903037E-15 -5.829703650287691E-12 -1.212012774739111E-10 1.186499114573512E-10 2.367990849562242E-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 14.19   n/a E2020-QM9  
diameter diameter 3.601 km 0.876 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.312   0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91112 (1998 HJ52)          Discovered 1998-Apr-25 by Zoltowski, F. B. at Woomera
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1998 HJ52 = 2000 RZ49 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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