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JPL Small-Body Database Browser
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85456 (1997 HW)
Classification: Main-belt Asteroid          SPK-ID: 2085456
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1780248673576821 4.8562e-08  
a 2.166839069598095 6.9361e-09 au
q 1.781087831647451 1.0368e-07 au
i 3.484660540360848 5.4195e-06 deg
node 43.08354236717983 5.9889e-05 deg
peri 309.0257159598254 6.1469e-05 deg
M 326.1948515732125 1.6803e-05 deg
tp 2459109.900362146176
(2020-Sep-17.40036215)
5.4675e-05 TDB
period 1165.033499495444
3.19
5.594e-06
1.532e-08
d
yr
n .3090039901478454 1.4837e-09 deg/d
Q 2.552590307548739 8.1709e-09 au
  Orbit Determination Parameters
   # obs. used (total)      727  
   data-arc span      8065 days (22.08 yr)  
   first obs. used      1997-04-28  
   last obs. used      2019-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52776  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:32:34  

Additional Information
 Earth MOID = .778303 au 
 Jupiter MOID = 2.87685 au 
 T_jup = 3.669 
[ 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 16.4   n/a MPO333526  

85456 (1997 HW)          Discovered 1997-Apr-28 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1997 HW = 2000 GQ22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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