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74587 (1999 ON1)
Classification: Main-belt Asteroid          SPK-ID: 2074587
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1427696338848989 3.2495e-08  
a 2.263739286981541 7.4969e-09 au
q 1.940546057768324 7.3451e-08 au
i 4.014441446186665 3.7104e-06 deg
node 144.7707458590896 5.929e-05 deg
peri 122.0581202307856 6.104e-05 deg
M 135.9297355397477 1.5031e-05 deg
tp 2458730.768148086138
(2019-Sep-04.26814809)		 5.1524e-05 TDB
period 1244.050582586045
3.41		 6.1799e-06
1.692e-08		 d
yr
n .2893773010834151 1.4375e-09 deg/d
Q 2.586932516194758 8.5672e-09 au
   Orbit Determination Parameters
   # obs. used (total)      789  
   data-arc span      9422 days (25.80 yr)  
   first obs. used      1995-03-26  
   last obs. used      2021-01-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58704  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 06:58:22  

Additional Information
 Earth MOID = .926439 au 
 Jupiter MOID = 2.49185 au 
 T_jup = 3.601 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457167.5 (2015-May-25.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1425130509643911 3.2518e-08  
q 1.941913987164021 7.3494e-08 au
tp 2457486.526593107679
(2016-Apr-08.02659311)		 5.109e-05 TDB
node 144.7997011208318 5.9306e-05 deg
peri 122.0250081613191 6.1063e-05 deg
i 4.013305065542138 3.7096e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      789  
   data-arc span      9422 days (25.80 yr)  
   first obs. used      1995-03-26  
   last obs. used      2021-01-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58704  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 06:58:22  

Additional Information
 Jupiter MOID = 2.49185 au 
 T_jup = 3.601 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.057443193319183E-15 -2.380675337815288E-15 -3.319093673165707E-13 1.491521912425209E-15 -9.528041872346551E-14 -1.799835979104427E-16
q -2.380675337815288E-15 5.401429788548975E-15 7.644025890070538E-13 -3.701170419272173E-15 2.164482708298677E-13 4.407094177272703E-16
tp -3.319093673165707E-13 7.644025890070538E-13 2.61018469147928E-9 -1.038656333360912E-11 7.602644670436969E-10 3.498947245591478E-13
node 1.491521912425209E-15 -3.701170419272173E-15 -1.038656333360912E-11 3.517229353566333E-9 -3.511279049629582E-9 4.196113825095419E-11
peri -9.528041872346551E-14 2.164482708298677E-13 7.602644670436969E-10 -3.511279049629582E-9 3.728732152186015E-9 -4.174299997690242E-11
i -1.799835979104427E-16 4.407094177272703E-16 3.498947245591478E-13 4.196113825095419E-11 -4.174299997690242E-11 1.376104917717618E-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 16.4   n/a MPO474632  

74587 (1999 ON1)          Discovered 1999-Jul-21 by Comba, P. G. at Prescott
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 ON1 = 2002 HM4 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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