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266587 (2008 HN49)
Classification: Main-belt Asteroid          SPK-ID: 2266587
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .198375136542806 4.4222e-08  
a 2.374157324614599 1.3832e-08 au
q 1.903183541170074 1.1112e-07 au
i 4.486985100303448 6.1026e-06 deg
node 339.6361671234981 6.1007e-05 deg
peri 284.9954504343827 6.416e-05 deg
M 328.2615119381953 1.6692e-05 deg
tp 2458718.300301449355
(2019-Aug-22.80030145)
6.1747e-05 TDB
period 1336.172927934879
3.66
1.1677e-05
3.197e-08
d
yr
n .2694262041039836 2.3545e-09 deg/d
Q 2.845131108059122 1.6576e-08 au
  Orbit Determination Parameters
   # obs. used (total)      302  
   data-arc span      6550 days (17.93 yr)  
   first obs. used      2001-07-29  
   last obs. used      2019-07-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57636  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:36:42  

Additional Information
 Earth MOID = .893156 au 
 Jupiter MOID = 2.26224 au 
 T_jup = 3.512 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456909.5 (2014-Sep-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1979181556471152 4.4257e-08  
q 1.905409736718042 1.1112e-07 au
tp 2457381.338513958778
(2015-Dec-24.83851396)
6.5253e-05 TDB
node 339.667922439007 6.1024e-05 deg
peri 284.7358954491539 6.4178e-05 deg
i 4.485914952275417 6.0989e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      302  
   data-arc span      6550 days (17.93 yr)  
   first obs. used      2001-07-29  
   last obs. used      2019-07-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57636  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:36:42  

Additional Information
 Jupiter MOID = 2.26224 au 
 T_jup = 3.512 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.958651911963121E-15 -4.8999336278642E-15 1.448538036751367E-13 8.928888042747824E-16 1.104274752054206E-13 -5.896581437969736E-15
q -4.8999336278642E-15 1.23479072755207E-14 -5.883875364756259E-13 -4.787084311268141E-15 -3.502641086195337E-13 1.463875630529624E-14
tp 1.448538036751367E-13 -5.883875364756259E-13 4.257962343183391E-9 2.615835521030641E-11 1.30886619024425E-9 8.056073169413957E-12
node 8.928888042747824E-16 -4.787084311268141E-15 2.615835521030641E-11 3.72391488096843E-9 -3.704055600421295E-9 1.168044112124665E-10
peri 1.104274752054206E-13 -3.502641086195337E-13 1.30886619024425E-9 -3.704055600421295E-9 4.118813017654107E-9 -1.143091350218666E-10
i -5.896581437969736E-15 1.463875630529624E-14 8.056073169413957E-12 1.168044112124665E-10 -1.143091350218666E-10 3.719689681152725E-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 16.9   n/a MPO476120  

266587 (2008 HN49)          Discovered 2008-Apr-29 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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