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185772 (1999 TH176)
Classification: Main-belt Asteroid          SPK-ID: 2185772
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1986642100880077 4.7175e-08  
a 2.223171861605213 1.1375e-08 au
q 1.781507179829527 1.014e-07 au
i 2.688633104909059 6.7994e-06 deg
node 30.70504793771612 0.00011234 deg
peri 301.9243538807435 0.00011397 deg
M 120.5388422372068 2.2213e-05 deg
tp 2458595.101163996710
(2019-Apr-21.60116400)
7.3318e-05 TDB
period 1210.759770481153
3.31
9.2928e-06
2.544e-08
d
yr
n .297333962340801 2.2821e-09 deg/d
Q 2.664836543380898 1.3635e-08 au
  Orbit Determination Parameters
   # obs. used (total)      305  
   data-arc span      7418 days (20.31 yr)  
   first obs. used      1999-10-07  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50386  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 08:09:13  

Additional Information
 Earth MOID = .773054 au 
 Jupiter MOID = 2.69792 au 
 T_jup = 3.620 
[ 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 17.1   n/a MPO449930  

185772 (1999 TH176)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

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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
1960-Aug-25 12:40 00:03 Eunom 0.0430470715170513 0.0430464280175805 0.0430477153503436 4.51734575237288 4.51734568018456 2437172.028063335 2.63727862329267 508.066433222136 29.764051622107 -88.6501304131372 216121.778658588 T 16 CATAB v2.0f-lin.ifort 2020-Nov-12 08:09:13 2020-Nov-12 08:09
2057-May-02 00:39 < 00:01 Hebe 0.0396866498365518 0.0396781485270262 0.0396951512558145 5.19416381832902 5.19416378817137 2472485.526823241 0.63075042550723 436.471774534695 44.3969505483963 13.9345069154543 34789.2211444293 T 16 CATAB v2.0f-lin.ifort 2020-Nov-12 08:09:13 2020-Nov-12 08:09

Alternate Designations
 1999 TH176 = 2005 KW2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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