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74864 (1999 TF91)
Classification: Main-belt Asteroid          SPK-ID: 2074864
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2289944053860387 3.7257e-08  
a 2.340665320369505 7.8956e-09 au
q 1.804666057123768 8.8375e-08 au
i 8.721676105283246 5.101e-06 deg
node 21.17138089230284 2.7671e-05 deg
peri 260.51059628001 3.0005e-05 deg
M 337.5354503491292 1.0594e-05 deg
tp 2459082.121133879865
(2020-Aug-20.62113388)		 3.8521e-05 TDB
period 1307.998987445195
3.58		 6.6183e-06
1.812e-08		 d
yr
n .2752295708601104 1.3926e-09 deg/d
Q 2.876664583615242 9.7037e-09 au
   Orbit Determination Parameters
   # obs. used (total)      581  
   data-arc span      10126 days (27.72 yr)  
   first obs. used      1992-10-26  
   last obs. used      2020-07-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55155  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:42:03  

Additional Information
 Earth MOID = .813841 au 
 Jupiter MOID = 2.33705 au 
 T_jup = 3.514 
[ 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 16.09   n/a E2021B10  

74864 (1999 TF91)          Discovered 1999-Oct-02 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)		 Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1935-Jan-21 16:08 < 00:01 Hebe 0.0307894567347888 0.030772091157553 0.0308068223307106 9.92544687084224 9.92544685049969 2427824.172562468 0.842908321526342 866.6835790335 36.1271009818693 2.50016889985235 7686.48519173096 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 21:42:04 2020-Nov-12 21:42
2105-Apr-26 12:24 < 00:01 David 0.0115650708665756 0.0115534035777384 0.0115767508925769 7.60274387520931 7.60274370339301 2490011.016769737 0.995713745389409 841.382499780501 53.3375658358124 46.356130422214 23506.9942858276 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 21:42:04 2020-Nov-12 21:42
2142-Oct-26 01:57 00:02 Hebe 0.0450992462502432 0.0450730025007407 0.0451254990407586 10.3534849169542 10.3534849036404 2503707.581416877 2.01068117974622 1651.48379747393 35.8123513144967 -37.5917202885355 114956.964425873 T 18 CATAB v2.0f-lin.ifort 2020-Nov-12 21:42:04 2020-Nov-12 21:42

Alternate Designations
 1999 TF91 = 2002 HW4 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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