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357220 (2002 HP8)
Classification: Outer Main-belt Asteroid          SPK-ID: 2357220
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01886932386508662 6.0824e-08  
a 3.204754270707256 4.3599e-08 au
q 3.144282724465261 2.1321e-07 au
i 12.47524431757883 7.5827e-06 deg
node 199.7102578234678 2.7447e-05 deg
peri 50.8000372874341 0.00021583 deg
M 21.39329987045119 0.00021306 deg
tp 2458875.972345757346
(2020-Jan-27.47234576)
0.0012397 TDB
period 2095.513819692464
5.74
4.2763e-05
1.171e-07
d
yr
n .1717955742486267 3.5058e-09 deg/d
Q 3.265225816949251 4.4422e-08 au
  Orbit Determination Parameters
   # obs. used (total)      168  
   data-arc span      6233 days (17.07 yr)  
   first obs. used      2002-04-08  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49342  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 00:28:59  

Additional Information
 Earth MOID = 2.14682 au 
 Jupiter MOID = 1.71317 au 
 T_jup = 3.156 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457349.5 (2015-Nov-23.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01635802802788261 6.0823e-08  
q 3.149672511880291 2.1284e-07 au
tp 2456786.116821227184
(2014-May-08.61682123)
0.0014191 TDB
node 199.7767881489672 2.7419e-05 deg
peri 51.09127486677987 0.00024819 deg
i 12.48517119698121 7.5873e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      168  
   data-arc span      6233 days (17.07 yr)  
   first obs. used      2002-04-08  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49342  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 00:28:59  

Additional Information
 Jupiter MOID = 1.71317 au 
 T_jup = 3.156 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.699478370038865E-15 -1.270076046541871E-14 -1.500303884780629E-11 1.431555323622281E-14 -2.569705257167702E-12 -7.215429370351101E-15
q -1.270076046541871E-14 4.53025936891869E-14 5.954293472265237E-11 -4.390487530228153E-14 1.028925824152798E-11 2.782055133795174E-14
tp -1.500303884780629E-11 5.954293472265237E-11 2.013731142236358E-6 3.625180896503658E-11 3.500767192086376E-7 1.399901748322183E-10
node 1.431555323622281E-14 -4.390487530228153E-14 3.625180896503658E-11 7.517924623097968E-10 -7.264764068020097E-10 -1.361580937068208E-11
peri -2.569705257167702E-12 1.028925824152798E-11 3.500767192086376E-7 -7.264764068020097E-10 6.159947775175026E-8 3.775232011543022E-11
i -7.215429370351101E-15 2.782055133795174E-14 1.399901748322183E-10 -1.361580937068208E-11 3.775232011543022E-11 5.756714853985561E-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 15.6   n/a MPO437509  

357220 (2002 HP8)          Discovered 2002-Apr-19 by Spacewatch at Kitt Peak
Reference: 20130327/Numbers.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 2002 HP8 = 2004 TC304 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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