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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1986642098669035 4.7175e-08  
a 2.223171861558129 1.1381e-08 au
q 1.78150718028335 1.014e-07 au
i 2.688633205486644 6.8018e-06 deg
node 30.70504811298114 0.00011241 deg
peri 301.9243536344289 0.00011405 deg
M 120.5388423231679 2.2239e-05 deg
tp 2458595.101163720482
(2019-Apr-21.60116372)
7.3402e-05 TDB
period 1210.75977044269
3.31
9.297e-06
2.545e-08
d
yr
n .2973339623502466 2.2831e-09 deg/d
Q 2.664836542832908 1.3642e-08 au
  Orbit Determination Parameters
   # obs. used (total)      274  
   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      .53136  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 20:09:47  

Additional Information
 Earth MOID = .773054 au 
 Jupiter MOID = 2.69792 au 
 T_jup = 3.620 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457337.5 (2015-Nov-11.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1994610366715246 4.7261e-08  
q 1.779363358733831 1.0166e-07 au
tp 2457384.839284927814
(2015-Dec-28.33928493)
6.9553e-05 TDB
node 30.72014974339126 0.00011231 deg
peri 301.9782702786673 0.00011393 deg
i 2.690788318079457 6.8029e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      274  
   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      .53136  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 20:09:47  

Additional Information
 Jupiter MOID = 2.69792 au 
 T_jup = 3.620 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.233569611214101E-15 -4.788497097461061E-15 9.328039423597046E-13 1.244086698688099E-14 2.115100381101225E-13 -3.870295422037936E-17
q -4.788497097461061E-15 1.033392879360171E-14 -1.876991132404394E-12 -2.612103261938085E-14 -4.219273671204799E-13 9.791680446506636E-17
tp 9.328039423597046E-13 -1.876991132404394E-12 4.837637369292248E-9 2.546496625047387E-11 1.351574254827607E-9 -1.892988282041723E-12
node 1.244086698688099E-14 -2.612103261938085E-14 2.546496625047387E-11 1.261450358954834E-8 -1.259282347091569E-8 2.193827316234678E-10
peri 2.115100381101225E-13 -4.219273671204799E-13 1.351574254827607E-9 -1.259282347091569E-8 1.298087717732573E-8 -2.19706521971234E-10
i -3.870295422037936E-17 9.791680446506636E-17 -1.892988282041723E-12 2.193827316234678E-10 -2.19706521971234E-10 4.627925750105307E-11

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

[ 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
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 15 CATAB v2.0f-lin.ifort 2020-Feb-24 20:09:50 2020-Feb-24 20:10
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 15 CATAB v2.0f-lin.ifort 2020-Feb-24 20:09:50 2020-Feb-24 20:10

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