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35591 (1998 HB91)
Classification: Main-belt Asteroid          SPK-ID: 2035591
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1076429834887109 3.7889e-08  
a 2.807574164703345 1.6673e-08 au
q 2.505358505248852 1.0682e-07 au
i 4.775803344936103 4.5948e-06 deg
node 145.861659162001 5.0396e-05 deg
peri 101.5961619867466 5.475e-05 deg
M 267.709395428184 2.2731e-05 deg
tp 2459641.004422699015
(2022-Mar-02.50442270)
0.00010953 TDB
period 1718.285332590328
4.70
1.5306e-05
4.191e-08
d
yr
n .2095111872120198 1.8663e-09 deg/d
Q 3.109789824157839 1.8467e-08 au
  Orbit Determination Parameters
   # obs. used (total)      885  
   data-arc span      10138 days (27.76 yr)  
   first obs. used      1993-04-16  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55557  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 03:59:42  

Additional Information
 Earth MOID = 1.49563 au 
 Jupiter MOID = 1.92253 au 
 T_jup = 3.309 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457123.5 (2015-Apr-11.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1095920965152456 3.7682e-08  
q 2.497924091282095 1.0634e-07 au
tp 2457923.007119382975
(2017-Jun-18.50711938)
0.00010468 TDB
node 145.9113694960236 5.0365e-05 deg
peri 101.7597169487862 5.4613e-05 deg
i 4.777561093745193 4.5986e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      885  
   data-arc span      10138 days (27.76 yr)  
   first obs. used      1993-04-16  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55557  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 03:59:42  

Additional Information
 Jupiter MOID = 1.92253 au 
 T_jup = 3.309 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.419961869300053E-15 -3.968456799942881E-15 -2.954520160079933E-13 1.571219266664686E-15 -4.117948835286409E-14 -2.666722919547668E-16
q -3.968456799942881E-15 1.130717001443135E-14 1.049742532263978E-12 -3.412885236483606E-15 1.355171037476017E-13 9.297432425336E-16
tp -2.954520160079933E-13 1.049742532263978E-12 1.095722154940205E-8 1.535148631426892E-11 2.22320738390258E-9 1.300500929406442E-12
node 1.571219266664686E-15 -3.412885236483606E-15 1.535148631426892E-11 2.536627846112089E-9 -2.524314455549011E-9 2.240844472670799E-12
peri -4.117948835286409E-14 1.355171037476017E-13 2.22320738390258E-9 -2.524314455549011E-9 2.982585728109921E-9 -1.99722476707281E-12
i -2.666722919547668E-16 9.297432425336E-16 1.300500929406442E-12 2.240844472670799E-12 -1.99722476707281E-12 2.114755244268156E-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 15.1   n/a MPO502416  
diameter diameter 6.376 km 0.297 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.040   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

35591 (1998 HB91)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1998 HB91 = 1995 WG33 = 2000 WA46 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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