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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1429950167550424 3.6075e-08  
a 2.263978653533772 8.6083e-09 au
q 1.940240988038652 8.3071e-08 au
i 4.013537561075847 4.5251e-06 deg
node 144.7883075246606 5.9734e-05 deg
peri 122.2104916628445 6.2072e-05 deg
M 322.1618433391393 1.6057e-05 deg
tp 2458731.277908829609
(2019-Sep-04.77790883)
5.5483e-05 TDB
period 1244.247905642776
3.41
7.0965e-06
1.943e-08
d
yr
n .2893314092532266 1.6502e-09 deg/d
Q 2.587716319028893 9.8393e-09 au
  Orbit Determination Parameters
   # obs. used (total)      674  
   data-arc span      8812 days (24.13 yr)  
   first obs. used      1995-03-26  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60648  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:41:43  

Additional Information
 Earth MOID = .927441 au 
 Jupiter MOID = 2.49245 au 
 T_jup = 3.601 
[ show covariance matrix ]

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 16.3   n/a MPO432298  

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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