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(2015 HA177)
Classification: Apollo [NEO]          SPK-ID: 3719076
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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2387622050777928 0.00052358  
a 1.128413060241884 0.00049689 au
q .8589906697399519 0.00021257 au
i 2.318504108228908 0.0054057 deg
node 215.6551499338481 0.0025223 deg
peri 80.41065696116181 0.017272 deg
M 200.9463587085157 1.054 deg
tp 2459393.937957664796
(2021-Jun-28.43795766)
1.4096 TDB
period 437.8250267889662
1.20
0.28919
0.0007918
d
yr
n .8222462809864036 0.0005431 deg/d
Q 1.397835450743817 0.00061552 au
  Orbit Determination Parameters
   # obs. used (total)      15  
   data-arc span      6 days  
   first obs. used      2015-04-23  
   last obs. used      2015-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .53666  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:34:00  

Additional Information
 Earth MOID = .00259265 au 
 Jupiter MOID = 3.76711 au 
 T_jup = 5.515 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457137.5 (2015-Apr-25.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2415256416431547 0.00051698  
q .8646704445921005 0.00023759 au
tp 2457203.561873389494
(2015-Jun-30.06187339)
0.027682 TDB
node 216.0034223255382 0.0003669 deg
peri 78.01159267224868 0.0025124 deg
i 2.490450434751762 0.0047022 deg
  Orbit Determination Parameters
   # obs. used (total)      15  
   data-arc span      6 days  
   first obs. used      2015-04-23  
   last obs. used      2015-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .53666  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:34:00  

Additional Information
 Jupiter MOID = 3.76711 au 
 T_jup = 5.515 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.672717723776315E-7 -1.228303114372288E-7 -1.431096068121172E-5 1.895859354832932E-7 -1.293838823694769E-6 2.430937571697572E-6
q -1.228303114372288E-7 5.644988214862322E-8 6.57678622935206E-6 -8.713194637813364E-8 5.944323389033796E-7 -1.11717907391711E-6
tp -1.431096068121172E-5 6.57678622935206E-6 .0007662947086984681 -1.015063437635241E-5 6.930930451693323E-5 -.0001301650885955659
node 1.895859354832932E-7 -8.713194637813364E-8 -1.015063437635241E-5 1.346137896342422E-7 -9.168393542044746E-7 1.7242099905484E-6
peri -1.293838823694769E-6 5.944323389033796E-7 6.930930451693323E-5 -9.168393542044746E-7 6.312230345903354E-6 -1.17702412941341E-5
i 2.430937571697572E-6 -1.11717907391711E-6 -.0001301650885955659 1.7242099905484E-6 -1.17702412941341E-5 2.211065185919151E-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 27.7   n/a MPO337166  

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