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120697 (1997 HP1)
Classification: Main-belt Asteroid          SPK-ID: 2120697
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05146514789462981 6.0634e-08  
a 3.129461886276659 3.2001e-08 au
q 2.968403667468823 1.8613e-07 au
i 11.7262476500205 8.8767e-06 deg
node 198.1612535407446 2.3902e-05 deg
peri 226.9895894433353 7.8265e-05 deg
M 187.1919050186726 7.6385e-05 deg
tp 2459971.154134327823
(2023-Jan-26.65413433)
0.00043183 TDB
period 2022.101385908886
5.54
3.1016e-05
8.492e-08
d
yr
n .1780326162222517 2.7308e-09 deg/d
Q 3.290520105084494 3.3648e-08 au
  Orbit Determination Parameters
   # obs. used (total)      361  
   data-arc span      8014 days (21.94 yr)  
   first obs. used      1997-04-28  
   last obs. used      2019-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62468  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 13:26:33  

Additional Information
 Earth MOID = 1.99257 au 
 Jupiter MOID = 1.93206 au 
 T_jup = 3.179 
[ 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 15.2   n/a MPO296896  
diameter diameter 3.929 km 0.663 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.095   0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120697 (1997 HP1)          Discovered 1997-Apr-28 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1997 HP1 = 2005 QB89 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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