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312576 (2009 HR69)
Classification: Main-belt Asteroid          SPK-ID: 2312576
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1179269143849145 7.744e-08  
a 2.812680017071967 2.5446e-08 au
q 2.480989341506562 2.1831e-07 au
i 4.068351119793605 9.4313e-06 deg
node 192.9814943765947 7.1401e-05 deg
peri 172.8923784168514 7.7111e-05 deg
M 345.565019504691 2.4708e-05 deg
tp 2459069.586408955687
(2020-Aug-08.08640896)
0.00011805 TDB
period 1722.974771744918
4.72
2.3381e-05
6.401e-08
d
yr
n .2089409583376634 2.8354e-09 deg/d
Q 3.144370692637373 2.8447e-08 au
  Orbit Determination Parameters
   # obs. used (total)      169  
   data-arc span      7889 days (21.60 yr)  
   first obs. used      1999-03-20  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5929  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 18:46:53  

Additional Information
 Earth MOID = 1.4794 au 
 Jupiter MOID = 2.31909 au 
 T_jup = 3.306 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457239.5 (2015-Aug-05.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1212433225281902 7.7892e-08  
q 2.471712029128875 2.2066e-07 au
tp 2457345.064403980963
(2015-Nov-18.56440398)
0.00011969 TDB
node 193.1130049562305 7.1238e-05 deg
peri 172.6353600002621 7.6561e-05 deg
i 4.072672329349759 9.4467e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      169  
   data-arc span      7889 days (21.60 yr)  
   first obs. used      1999-03-20  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5929  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 18:46:53  

Additional Information
 Jupiter MOID = 2.31909 au 
 T_jup = 3.306 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.067154249715839E-15 -1.709971237211103E-14 1.083454427926263E-12 -2.026980263191147E-15 2.347460549676253E-13 -1.972753827380923E-15
q -1.709971237211103E-14 4.868906826065184E-14 -4.084924085291921E-12 4.045454006004174E-15 -8.999867697414632E-13 6.832721364228136E-15
tp 1.083454427926263E-12 -4.084924085291921E-12 1.43262481898029E-8 6.503325764789246E-13 3.370378750455409E-9 -4.659837381054963E-12
node -2.026980263191147E-15 4.045454006004174E-15 6.503325764789246E-13 5.074792163422157E-9 -5.061255277570813E-9 4.665122055000575E-12
peri 2.347460549676253E-13 -8.999867697414632E-13 3.370378750455409E-9 -5.061255277570813E-9 5.861651807198868E-9 -5.775159227311029E-12
i -1.972753827380923E-15 6.832721364228136E-15 -4.659837381054963E-12 4.665122055000575E-12 -5.775159227311029E-12 8.923991233660653E-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 17.0   n/a MPO440462  

312576 (2009 HR69)          Discovered 2009-Apr-22 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1955-Jul-17 12:32 00:04 Europ 0.0353915088909474 0.0353758124468689 0.035407209652406 3.40631406492922 3.4063139767659 2435306.022167087 3.66389787652688 997.614333984426 85.1448266415953 38.5471475830532 38934.030277067 T 12 CATAB v2.0f-lin.ifort 2020-Nov-11 18:46:53 2020-Nov-11 18:46
2195-Feb-23 06:57 00:13 Amphi 0.0246537429162276 0.0246172107525111 0.0246904561207912 3.61040628248299 3.61040621789763 2522820.789293562 12.6155279640408 3798.47120373699 62.4310263648183 61.2981201484816 51785.1714556963 T 12 CATAB v2.0f-lin.ifort 2020-Nov-11 18:46:53 2020-Nov-11 18:46
2200-Nov-02 00:24 00:03 David 0.0463813130592671 0.0463339896661882 0.046428701887315 5.83973570349915 5.83973564772323 2524898.516840933 3.07315511872694 3621.85457206434 65.2616613600996 49.339212773677 80625.7996836032 T 12 CATAB v2.0f-lin.ifort 2020-Nov-11 18:46:53 2020-Nov-11 18:46

Alternate Designations
 2009 HR69 = 2008 CV64 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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