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392952 (2012 WT20)
Classification: Main-belt Asteroid          SPK-ID: 2392952
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04098448243184642 5.676e-08  
a 3.023441075099741 4.8735e-08 au
q 2.899526907473593 1.6183e-07 au
i 10.01231231439534 6.052e-06 deg
node 46.15405380293267 3.4121e-05 deg
peri 85.81080387883192 8.7906e-05 deg
M 166.6671793804651 8.4504e-05 deg
tp 2458507.507135560266
(2019-Jan-24.00713556)
0.00044162 TDB
period 1920.218680054145
5.26
4.6428e-05
1.271e-07
d
yr
n .1874786469579855 4.5329e-09 deg/d
Q 3.147355242725889 5.0732e-08 au
  Orbit Determination Parameters
   # obs. used (total)      170  
   data-arc span      6282 days (17.20 yr)  
   first obs. used      2004-05-24  
   last obs. used      2021-08-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6657  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 04:41:47  

Additional Information
 Earth MOID = 1.93703 au 
 Jupiter MOID = 1.89356 au 
 T_jup = 3.221 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458069.5 (2017-Nov-12.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0428303597054153 5.6554e-08  
q 2.891813734446769 1.6229e-07 au
tp 2458502.154790364391
(2019-Jan-18.65479036)
0.00042419 TDB
node 46.21225104191227 3.409e-05 deg
peri 84.45377258523779 8.4951e-05 deg
i 10.01961461139358 6.0556e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      170  
   data-arc span      6282 days (17.20 yr)  
   first obs. used      2004-05-24  
   last obs. used      2021-08-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6657  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 04:41:47  

Additional Information
 Jupiter MOID = 1.89356 au 
 T_jup = 3.221 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.198376930520669E-15 -8.824563488655389E-15 5.838154101872033E-12 -7.676008756992661E-15 9.943652984717499E-13 3.386672635374343E-15
q -8.824563488655389E-15 2.63373888797246E-14 -9.647771637063787E-12 2.275478148237352E-14 -1.626918133343145E-12 -6.480456170974321E-15
tp 5.838154101872033E-12 -9.647771637063787E-12 1.799372354161536E-7 4.766834356527043E-11 3.304169610694182E-8 7.116858912053222E-12
node -7.676008756992661E-15 2.275478148237352E-14 4.766834356527043E-11 1.162101458761362E-9 -1.1348964280951E-9 -1.764624608652931E-11
peri 9.943652984717499E-13 -1.626918133343145E-12 3.304169610694182E-8 -1.1348964280951E-9 7.21673879161954E-9 1.852941561495031E-11
i 3.386672635374343E-15 -6.480456170974321E-15 7.116858912053222E-12 -1.764624608652931E-11 1.852941561495031E-11 3.667079034565726E-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 16.25   n/a E2021B25  

392952 (2012 WT20)          Discovered 2009-Mar-18 by CSS at Catalina
Reference: Last Updated: 2014-04-17

[ 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
1928-Feb-29 02:03 00:06 Jupiter 1.89751192858558 1.89751113756806 1.89751271960999 3.84541572350967 3.72752603594767 2425305.585197991 6.36673701604854 310.693132192262 25.8504761604189 88.3422257580931 2016191.56417335 T 19 CATAB v2.0g-lin.ifort 2021-Aug-25 04:41:47 2021-Aug-25 04:41
1975-Mar-22 19:58 00:03 Jupiter 1.89906876081061 1.89906816108889 1.89906936053254 3.59356458540029 3.46722750541717 2442494.332081167 3.07125528774728 218.958421904607 24.4269526159118 -88.80284759381 2110046.30967358 T 19 CATAB v2.0g-lin.ifort 2021-Aug-25 04:41:47 2021-Aug-25 04:41
2022-Apr-08 20:11 < 00:01 Jupiter 1.91889493438395 1.91889420448432 1.91889566428358 3.3415271372627 3.20670865218089 2459678.341241910 0.45675557641428 99.081585459282 29.8120695529595 -85.3322335762232 2149057.91303217 T 19 CATAB v2.0g-lin.ifort 2021-Aug-25 04:41:47 2021-Aug-25 04:41
2069-Apr-21 21:24 00:04 Jupiter 1.95866792608036 1.95866659215337 1.9586692600128 3.15222059843021 3.01190939557044 2476858.391324073 3.89883162014631 213.518244370651 34.6457309599922 -74.1131936269213 2400485.0477025 T 19 CATAB v2.0g-lin.ifort 2021-Aug-25 04:41:47 2021-Aug-25 04:41
2107-Feb-03 14:52 00:06 Jupiter 1.98227667550155 1.98227491582677 1.98227843518038 4.33181442097885 4.23202321929691 2490659.119259604 6.23076335184995 185.986523233295 37.2913742220517 -65.7740294286811 2065708.57950704 T 19 CATAB v2.0g-lin.ifort 2021-Aug-25 04:41:47 2021-Aug-25 04:41
2154-Mar-01 05:40 00:10 Jupiter 1.92604722416146 1.92604534166635 1.92604910665669 4.16760839695897 4.06071605085651 2507851.736091644 9.49272334541284 125.002438341381 72.7091671775614 -64.4252203460317 1105746.43173171 T 19 CATAB v2.0g-lin.ifort 2021-Aug-25 04:41:47 2021-Aug-25 04:41

Alternate Designations
 2012 WT20 = 2014 DB13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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