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JPL Small-Body Database Browser
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74984 (1999 TW248)
Classification: Main-belt Asteroid          SPK-ID: 2074984
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07850537360781361 4.2938e-08  
a 2.290021471223719 9.5471e-09 au
q 2.110242480055386 9.9136e-08 au
i 7.012703580505034 4.8056e-06 deg
node 184.6120725554038 3.4647e-05 deg
peri 235.8968505154439 4.519e-05 deg
M 217.2590341507567 3.0166e-05 deg
tp 2459102.384621691595
(2020-Sep-09.88462169)		 0.00010723 TDB
period 1265.778627277881
3.47		 7.9155e-06
2.167e-08		 d
yr
n .2844099214838203 1.7786e-09 deg/d
Q 2.469800462392052 1.0297e-08 au
   Orbit Determination Parameters
   # obs. used (total)      916  
   data-arc span      7271 days (19.91 yr)  
   first obs. used      1999-10-08  
   last obs. used      2019-09-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54346  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:44:15  

Additional Information
 Earth MOID = 1.13007 au 
 Jupiter MOID = 2.75305 au 
 T_jup = 3.585 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3   n/a MPO436308  

74984 (1999 TW248)          Discovered 1999-Oct-08 by CSS at Catalina
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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