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79474 (1998 BT9)
Classification: Main-belt Asteroid          SPK-ID: 2079474
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06992027517059117 4.1249e-08  
a 2.843064631804459 2.0796e-08 au
q 2.644276770420916 1.1529e-07 au
i 10.24420889888446 5.1562e-06 deg
node 89.72379226333153 2.4611e-05 deg
peri 99.26831794709793 4.5379e-05 deg
M 128.3308764800406 3.7324e-05 deg
tp 2458376.323827762665
(2018-Sep-14.82382776)
0.00018032 TDB
period 1750.96927698759
4.79
1.9212e-05
5.26e-08
d
yr
n .2056004092883644 2.2558e-09 deg/d
Q 3.041852493188003 2.225e-08 au
  Orbit Determination Parameters
   # obs. used (total)      661  
   data-arc span      8225 days (22.52 yr)  
   first obs. used      1998-01-22  
   last obs. used      2020-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50295  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:35:07  

Additional Information
 Earth MOID = 1.66773 au 
 Jupiter MOID = 1.99976 au 
 T_jup = 3.281 
[ 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 14.9   n/a MPO436336  

79474 (1998 BT9)          Discovered 1998-Jan-22 by Spacewatch at Kitt Peak
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

[ show close-approach data ]
Alternate Designations
 1998 BT9 = 2002 YD17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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