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181840 (1998 TS12)
Classification: Main-belt Asteroid          SPK-ID: 2181840
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1604938894701005 3.9756e-08  
a 2.374573651635848 9.8694e-09 au
q 1.993469090451591 9.245e-08 au
i 4.229554911944946 5.4849e-06 deg
node 33.21877135353419 4.6735e-05 deg
peri 307.372136010598 4.9632e-05 deg
M 114.7833343687905 1.6057e-05 deg
tp 2458970.359089523842
(2020-Apr-30.85908952)
5.8743e-05 TDB
period 1336.524405873412
3.66
8.3325e-06
2.281e-08
d
yr
n .2693553506527565 1.6793e-09 deg/d
Q 2.755678212820104 1.1453e-08 au
  Orbit Determination Parameters
   # obs. used (total)      402  
   data-arc span      10176 days (27.86 yr)  
   first obs. used      1993-03-23  
   last obs. used      2021-01-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49399  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:16  

Additional Information
 Earth MOID = .987854 au 
 Jupiter MOID = 2.6353 au 
 T_jup = 3.521 
[ 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 16.84   n/a MPCxxxxx  

181840 (1998 TS12)          Discovered 1998-Oct-13 by Spacewatch at Kitt Peak
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ 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
2127-Sep-28 06:20 00:05 David 0.0362182743486541 0.0361866636806868 0.0362498904173039 5.50933454013071 5.50933446442021 2498200.763656273 5.07152720236222 1723.13307893075 45.157515910957 -23.8819145371494 48635.0553296999 T 16 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:16 2021-Apr-13 21:32
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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