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74865 (1999 TG91)
Classification: Main-belt Asteroid          SPK-ID: 2074865
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1359887076193378 3.2271e-08  
a 2.304528020917025 9.4626e-09 au
q 1.991138233679969 7.1735e-08 au
i 3.809963417804502 4.4071e-06 deg
node 143.7679440814272 6.3772e-05 deg
peri 119.1402909461311 6.8374e-05 deg
M 111.7010438635438 2.6518e-05 deg
tp 2458804.015560625661
(2019-Nov-16.51556063)
9.4101e-05 TDB
period 1277.825105637591
3.50
7.8703e-06
2.155e-08
d
yr
n .2817286954307979 1.7352e-09 deg/d
Q 2.617917808154081 1.0749e-08 au
  Orbit Determination Parameters
   # obs. used (total)      957  
   data-arc span      8792 days (24.07 yr)  
   first obs. used      1997-01-10  
   last obs. used      2021-02-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55157  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:16:03  

Additional Information
 Earth MOID = .97713 au 
 Jupiter MOID = 2.4467 au 
 T_jup = 3.574 
[ 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 15.99   n/a E2021B10  

74865 (1999 TG91)          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
1905-Oct-18 20:19 00:20 Psych 0.0340168321933781 0.0340153081579998 0.0340183562510153 2.1520143959999 2.15201423072224 2417137.346747785 20.0233957136097 135.270862526505 69.9301473739912 -75.4655676732527 70851.2190694899 T 21 CATAB v2.0f-lin.ifort 2021-Apr-13 13:16:05 2021-Apr-13 13:16
1997-May-05 08:19 < 00:01 David 0.0363862702906181 0.0363837269092293 0.0363888136725603 5.3363946361784 5.33639455837518 2450573.846440473 0.884996002381826 126.983143042483 35.2667344855885 -3.47321067498905 43774.5520010233 T 21 CATAB v2.0f-lin.ifort 2021-Apr-13 13:16:05 2021-Apr-13 13:16
2097-Apr-22 22:09 < 00:01 Hebe 0.0281726435830779 0.0281659217470965 0.0281793763402709 7.0239294081691 7.02392937675318 2487086.422820714 0.981026191453132 945.382483947821 48.7051989476187 -69.4215065248903 81007.4666039326 T 21 CATAB v2.0f-lin.ifort 2021-Apr-13 13:16:05 2021-Apr-13 13:16

Alternate Designations
 1999 TG91 = 1998 FY120 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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