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215781 (2004 HL73)
Classification: Main-belt Asteroid          SPK-ID: 2215781
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09971808648120403 4.0474e-08  
a 2.961183214445926 2.5142e-08 au
q 2.665899690581118 1.2268e-07 au
i 1.903087210529992 4.8182e-06 deg
node 26.5187674198945 0.00015095 deg
peri 246.2016412734896 0.00015405 deg
M 93.18669222346753 2.8161e-05 deg
tp 2458914.721138889686
(2020-Mar-06.22113889)
0.00014629 TDB
period 1861.214148301262
5.10
2.3704e-05
6.49e-08
d
yr
n .1934221273401417 2.4634e-09 deg/d
Q 3.256466738310735 2.7649e-08 au
  Orbit Determination Parameters
   # obs. used (total)      302  
   data-arc span      10086 days (27.61 yr)  
   first obs. used      1993-02-26  
   last obs. used      2020-10-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57907  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:52:08  

Additional Information
 Earth MOID = 1.65026 au 
 Jupiter MOID = 1.83023 au 
 T_jup = 3.258 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457655.5 (2016-Sep-24.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09858237702223864 4.0824e-08  
q 2.671221600529095 1.2397e-07 au
tp 2457058.241443283625
(2015-Feb-04.74144328)
0.00015263 TDB
node 26.65999805376584 0.00015077 deg
peri 247.452330666508 0.00015389 deg
i 1.904129184624477 4.8173e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      302  
   data-arc span      10086 days (27.61 yr)  
   first obs. used      1993-02-26  
   last obs. used      2020-10-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57907  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:52:08  

Additional Information
 Jupiter MOID = 1.83023 au 
 T_jup = 3.258 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.66658823869963E-15 -4.974760739053579E-15 1.403850767624366E-12 -5.754485306377687E-15 2.988954355634602E-13 -9.32435516995642E-16
q -4.974760739053579E-15 1.536752454206668E-14 -5.224561688524394E-12 1.15229968301878E-14 -1.060164335519677E-12 3.187167030649496E-15
tp 1.403850767624366E-12 -5.224561688524394E-12 2.329608806350003E-8 -4.28681294995562E-12 4.726813319822597E-9 -4.089205984221634E-12
node -5.754485306377687E-15 1.15229968301878E-14 -4.28681294995562E-12 2.273304208035567E-8 -2.272192346917212E-8 -1.317766930029333E-10
peri 2.988954355634602E-13 -1.060164335519677E-12 4.726813319822597E-9 -2.272192346917212E-8 2.368283851432831E-8 1.30901013492918E-10
i -9.32435516995642E-16 3.187167030649496E-15 -4.089205984221634E-12 -1.317766930029333E-10 1.30901013492918E-10 2.320591871619811E-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 16.38   n/a E2021B55  

215781 (2004 HL73)          Discovered 2004-Apr-28 by Spacewatch at Kitt Peak
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

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