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JPL Small-Body Database Browser
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56557 (2000 HX91)
Classification: Main-belt Asteroid          SPK-ID: 2056557
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0913030424884593 3.5435e-08  
a 2.316255444614131 7.701e-09 au
q 2.104774275340402 8.2988e-08 au
i 6.878331150688927 3.9748e-06 deg
node 175.1773338592091 2.9711e-05 deg
peri 237.3599661948919 3.6986e-05 deg
M 298.9057251975676 2.0443e-05 deg
tp 2458819.012416527901
(2019-Dec-01.51241653)
7.2961e-05 TDB
period 1287.591516626241
3.53
6.4214e-06
1.758e-08
d
yr
n .279591776857365 1.3944e-09 deg/d
Q 2.52773661388786 8.4041e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1121  
   data-arc span      25570 days (70.01 yr)  
   first obs. used      1949-11-30  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52101  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 05:44:45  

Additional Information
 Earth MOID = 1.12307 au 
 Jupiter MOID = 2.75299 au 
 T_jup = 3.566 
[ show covariance matrix ]

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 15.3   n/a MPO347901  

56557 (2000 HX91)          Discovered 2000-Apr-30 by NEAT at Haleakala
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 HX91 = 2001 RU20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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