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(2015 HQ171)
Classification: Apollo [NEO]          SPK-ID: 3718762
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2661169110686054 0.00014974  
a 1.172223681023706 0.00016367 au
q .8602751359482069 5.542e-05 au
i 9.118596237542537 0.003995 deg
node 42.08196100021948 0.00090357 deg
peri 250.9607624336151 0.00062977 deg
M 111.614738751334 0.31864 deg
tp 2459056.774704851374
(2020-Jul-26.27470485)
0.38021 TDB
period 463.5687619067864
1.27
0.097086
0.0002658
d
yr
n .7765838200987066 0.00016264 deg/d
Q 1.484172226099204 0.00020722 au
  Orbit Determination Parameters
   # obs. used (total)      51  
   data-arc span      3 days  
   first obs. used      2015-04-28  
   last obs. used      2015-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .40225  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Feb-10 07:06:43  

Additional Information
 Earth MOID = .00371094 au 
 Jupiter MOID = 3.69406 au 
 T_jup = 5.342 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457142.5 (2015-Apr-30.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2701470512102274 0.00014667  
q .8575788612368148 5.5167e-05 au
tp 2457202.489269210349
(2015-Jun-28.98926921)
0.00832 TDB
node 42.19990349689521 5.7534e-05 deg
peri 251.2265285853164 0.0025419 deg
i 8.833224933553886 0.0039815 deg
  Orbit Determination Parameters
   # obs. used (total)      51  
   data-arc span      3 days  
   first obs. used      2015-04-28  
   last obs. used      2015-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .40225  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Feb-10 07:06:43  

Additional Information
 Jupiter MOID = 3.69406 au 
 T_jup = 5.342 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.15111876253454E-8 -8.090337922324539E-9 -1.220095007799099E-6 9.72336158206744E-10 -3.715109518937271E-7 5.838217778271963E-7
q -8.090337922324539E-9 3.043388442840683E-9 4.58766162863058E-7 -3.767708577154883E-10 1.395609121042277E-7 -2.195647197424852E-7
tp -1.220095007799099E-6 4.58766162863058E-7 6.922259617641602E-5 -5.238088785685821E-8 2.110042479808671E-5 -3.31167135044187E-5
node 9.72336158206744E-10 -3.767708577154883E-10 -5.238088785685821E-8 3.310124495626457E-9 -1.615193452537704E-8 2.164341002285301E-8
peri -3.715109518937271E-7 1.395609121042277E-7 2.110042479808671E-5 -1.615193452537704E-8 6.461353249217442E-6 -1.008211060028385E-5
i 5.838217778271963E-7 -2.195647197424852E-7 -3.31167135044187E-5 2.164341002285301E-8 -1.008211060028385E-5 1.585273240619661E-5

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 26.8   n/a MPO438014  

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