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74808 (1999 TW1)
Classification: Main-belt Asteroid          SPK-ID: 2074808
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1097053934757004 3.0513e-08  
a 2.35573522120393 8.4826e-09 au
q 2.097298361837187 7.366e-08 au
i 4.579560693969215 4.4135e-06 deg
node 183.3864799225969 4.2159e-05 deg
peri 117.893369337659 4.6971e-05 deg
M 18.88564340729788 2.0273e-05 deg
tp 2459131.218477309144
(2020-Oct-08.71847731)
7.434e-05 TDB
period 1320.651228597809
3.62
7.1332e-06
1.953e-08
d
yr
n .272592787712943 1.4723e-09 deg/d
Q 2.614172080570673 9.4132e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1416  
   data-arc span      8313 days (22.76 yr)  
   first obs. used      1998-03-03  
   last obs. used      2020-12-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48016  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 06:59:10  

Additional Information
 Earth MOID = 1.08477 au 
 Jupiter MOID = 2.5673 au 
 T_jup = 3.542 
[ 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 15.15   n/a E2021B10  

74808 (1999 TW1)          Discovered 1999-Oct-01 by Korlevic, K. at Visnjan
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
1906-Jul-10 18:56 00:02 David 0.0412465720246562 0.0412339089153557 0.041259235909979 5.70253486898208 5.70253480475366 2417402.288928347 2.28189831905631 691.402974794136 20.1753806792137 -24.0955977563934 125065.665332366 T 26 CATAB v2.0f-lin.ifort 2021-Feb-24 06:59:13 2021-Feb-24 06:59
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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