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216771 (2005 WC45)
Classification: Outer Main-belt Asteroid          SPK-ID: 2216771
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04348516963285904 6.1373e-08  
a 3.970866850670877 7.4142e-08 au
q 3.798193032079957 2.3197e-07 au
i .7476867290975379 6.037e-06 deg
node 247.7559840529696 0.00049282 deg
peri 282.6376611635087 0.00049871 deg
M 253.0173809674174 7.8358e-05 deg
tp 2460255.389194140870
(2023-Nov-06.88919414)
0.00064292 TDB
period 2890.1901326284
7.91
8.0946e-05
2.216e-07
d
yr
n .1245592793137829 3.4885e-09 deg/d
Q 4.143540669261797 7.7366e-08 au
  Orbit Determination Parameters
   # obs. used (total)      225  
   data-arc span      7167 days (19.62 yr)  
   first obs. used      2001-04-24  
   last obs. used      2020-12-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59659  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:56:13  

Additional Information
 Earth MOID = 2.80467 au 
 Jupiter MOID = .831884 au 
 T_jup = 3.056 
[ 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 15.21   n/a MPCxxxxx  

216771 (2005 WC45)          Discovered 2005-Nov-22 by Spacewatch at Kitt Peak
Reference: 20090707/Numbers.arcLast Updated: 2009-07-09

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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
1900-Jul-13 08:28 00:03 Jupiter 1.65883559648948 1.65883423896892 1.65883695401004 3.36929158107618 3.21417180193537 2415213.853101335 2.83258582807528 87.3565717928064 44.5259975854195 62.5389938992846 1543042.62545935 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 23:56:14 2021-Apr-13 23:56
1923-Jun-11 10:04 00:03 Jupiter 1.76976265563733 1.76976129411035 1.76976401716501 3.64664054240421 3.5129433964249 2423581.919237931 3.37526627193734 108.108140083043 39.8906200180195 64.5897640270636 1804839.39917222 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 23:56:14 2021-Apr-13 23:56
1946-Mar-20 00:57 00:04 Jupiter 1.80412817666151 1.8041272585616 1.80412909476204 3.68317564565466 3.55342091590485 2431899.539714849 3.61942897420082 121.419287079055 33.1853018084388 79.6807226440971 2285135.72914424 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 23:56:14 2021-Apr-13 23:56
1969-Jan-06 05:57 00:03 Jupiter 1.74019105781289 1.74019030423727 1.74019181138852 3.44084502195521 3.29635135619052 2440227.748112672 3.33409282252629 114.949322081951 29.892904029091 -85.900484442391 2448327.27608983 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 23:56:14 2021-Apr-13 23:56
1992-Jan-07 14:04 00:02 Jupiter 1.62436768168416 1.62436678047419 1.62436858289412 3.08950293151319 2.91584178396535 2448629.086267086 2.20146954907537 85.3555546045085 32.985377695923 -81.8937888154299 2074767.60844679 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 23:56:14 2021-Apr-13 23:56
2015-Jun-02 01:02 < 00:01 Jupiter 1.55508562125341 1.55508491673667 1.55508632576998 2.909944384624 2.71632440680076 2457175.542910252 0.460294329226051 71.8587851049866 23.9950231987429 85.0394301207421 2251923.63063246 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 23:56:14 2021-Apr-13 23:56
2039-Apr-10 19:33 00:03 Jupiter 1.54784437269326 1.54784348706839 1.54784525831822 2.90827801392084 2.71360031070872 2465889.314882182 2.78596114728958 97.6238480050951 29.5132459258927 -83.2006015728862 2032473.19382823 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 23:56:14 2021-Apr-13 23:56
2063-Jun-12 12:17 00:05 Jupiter 1.57154260056816 1.57154158319309 1.57154361794493 2.95498611953707 2.76658499535448 2474718.011703128 4.91894803371664 151.66436538561 29.2348988857874 -80.686712371981 2090441.20357902 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 23:56:14 2021-Apr-13 23:56
2087-Sep-17 00:08 00:06 Jupiter 1.57184664955141 1.57184581971053 1.57184747939363 2.89206460089291 2.69931393841814 2483580.505421382 6.09979756911133 190.850220824383 25.6529215099904 -85.6846177734539 2098564.28324156 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 23:56:14 2021-Apr-13 23:56
2111-Oct-22 17:01 00:06 Jupiter 1.55673195357393 1.55673122073697 1.5567326864115 2.77855673987659 2.57530028850849 2492381.209359265 6.10672038087765 192.747572497489 22.2192006419683 -87.3889673681333 2173841.37726871 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 23:56:14 2021-Apr-13 23:56
2135-Jul-07 18:04 00:05 Jupiter 1.5910362424619 1.59103528415338 1.59103720077213 2.84429629518807 2.65052413938686 2501040.252487076 5.02913721501203 168.64288598526 27.2479480285069 -83.44013225399 2056147.93880214 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 23:56:14 2021-Apr-13 23:56
2158-Oct-05 21:27 00:04 Jupiter 1.68043636912705 1.68043485441046 1.68043788384431 3.17984280348891 3.0171678722948 2509531.394016056 3.88927809443027 145.244144293743 48.2462456085863 -75.9312926333753 1319255.39504454 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 23:56:14 2021-Apr-13 23:56
2181-Sep-04 13:13 00:03 Jupiter 1.77846938901575 1.77846789554716 1.77847088248464 3.68304582711245 3.55137956342333 2517901.050725553 3.48155863472027 119.787089134667 53.6731533830669 -71.4733070080691 1336881.59963727 T 19 CATAB v2.0f-lin.ifort 2021-Apr-13 23:56:14 2021-Apr-13 23:56

Alternate Designations
 2005 WC45 = 2007 CN9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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