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100573 (1997 HR2)
Classification: Main-belt Asteroid          SPK-ID: 2100573
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2342721418863958 3.6974e-08  
a 2.398294289461344 7.7146e-09 au
q 1.836440749395323 8.8313e-08 au
i 3.067625627403937 4.3179e-06 deg
node 130.4503430147862 0.00010377 deg
peri 172.2260740143938 0.00010465 deg
M 80.30852698865898 1.4027e-05 deg
tp 2458897.870474897344
(2020-Feb-18.37047490)
5.2326e-05 TDB
period 1356.601012646406
3.71
6.5457e-06
1.792e-08
d
yr
n .2653691075298003 1.2804e-09 deg/d
Q 2.960147829527365 9.5219e-09 au
  Orbit Determination Parameters
   # obs. used (total)      454  
   data-arc span      8657 days (23.70 yr)  
   first obs. used      1997-04-29  
   last obs. used      2021-01-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56372  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:32:47  

Additional Information
 Earth MOID = .819162 au 
 Jupiter MOID = 2.28482 au 
 T_jup = 3.488 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457419.5 (2016-Feb-01.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2338750203499395 3.6985e-08  
q 1.837556755065648 8.8375e-08 au
tp 2457541.709103810266
(2016-Jun-02.20910381)
5.0606e-05 TDB
node 130.4690258428201 0.00010382 deg
peri 172.380044645312 0.00010471 deg
i 3.066762745457193 4.3163e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      454  
   data-arc span      8657 days (23.70 yr)  
   first obs. used      1997-04-29  
   last obs. used      2021-01-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56372  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:32:47  

Additional Information
 Jupiter MOID = 2.28482 au 
 T_jup = 3.488 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.367923932269982E-15 -3.261287862368914E-15 1.031928671793858E-12 -2.174657813351162E-14 2.753731653621747E-13 -9.426385639836735E-16
q -3.261287862368914E-15 7.810075132593913E-15 -2.408959675132563E-12 4.93584640299192E-14 -6.432153959209899E-13 2.178127166006795E-15
tp 1.031928671793858E-12 -2.408959675132563E-12 2.560968516631204E-9 -4.574379537030279E-11 7.276534019519944E-10 -2.510723461043433E-12
node -2.174657813351162E-14 4.93584640299192E-14 -4.574379537030279E-11 1.077933420932985E-8 -1.077552831607036E-8 2.255274284492777E-10
peri 2.753731653621747E-13 -6.432153959209899E-13 7.276534019519944E-10 -1.077552831607036E-8 1.096322397114502E-8 -2.258888179596717E-10
i -9.426385639836735E-16 2.178127166006795E-15 -2.510723461043433E-12 2.255274284492777E-10 -2.258888179596717E-10 1.863067748014162E-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 16.88   n/a E2021B55  

100573 (1997 HR2)          Discovered 1997-Apr-29 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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