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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07048734563642062 4.0301e-08  
a 2.841280202976091 1.9622e-08 au
q 2.641005903258996 1.1103e-07 au
i 10.24380900645167 4.2288e-06 deg
node 89.71274574355628 2.3702e-05 deg
peri 98.89626449598579 3.9358e-05 deg
M 210.2112164102733 3.2658e-05 deg
tp 2460124.357427315293
(2023-Jun-28.85742732)
0.00016216 TDB
period 1749.321060989487
4.79
1.8122e-05
4.962e-08
d
yr
n .205794126663272 2.1319e-09 deg/d
Q 3.041554502693186 2.1006e-08 au
  Orbit Determination Parameters
   # obs. used (total)      730  
   data-arc span      8387 days (22.96 yr)  
   first obs. used      1998-01-22  
   last obs. used      2021-01-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5033  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:02:14  

Additional Information
 Earth MOID = 1.66542 au 
 Jupiter MOID = 1.99822 au 
 T_jup = 3.282 
[ 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 14.96   n/a E2021B10  

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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