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46P/Wirtanen
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000109
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2456799.5 (2014-May-22.0) TDB
Reference: JPL K073/17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .659202561356482 4.8292e-07  
a 3.087646694227751 1.3467e-06 AU
q 1.052262084828943 1.6502e-06 AU
i 11.75713931185802 2.4644e-05 deg
node 82.16439076917047 0.00010107 deg
peri 356.3402053363259 0.00025456 deg
M 57.51960214822232 0.00016983 deg
tp 2456482.869169743122
(2013-Jul-09.36916974)
0.00072885 JED
period 1981.708750327282
5.43
0.0012965
3.55e-06
d
yr
n .1816614070763655 1.1885e-07 deg/d
Q 5.123031303626559 2.2344e-06 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 2.818962409695327E-9 1.148E-10
A2 [EST] -1.362636343747909E-9 4.159E-11
A3 [EST] 6.64868999215002E-10 6.468E-11
DT [EST] -3.733303565333467 2.964
  Orbit Determination Parameters
   # obs. used (total)      1523  
   data-arc span      4328 days (11.85 yr)  
   first obs. used      2002-06-23  
   last obs. used      2014-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      2  
   fit RMS      .84082  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2014-May-12 11:42:10  

Additional Information
 Earth MOID = .0682125 AU 
 T_jup = 2.819 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 12.9 mag 1. K073/17 2 parameter fit from 263 observations, autocmod 2.5c
comet total magnitude slope K1 13.   n/a K073/17 autocmod 2.5c
comet nuclear magnitude M2 15.9 mag 01. K073/17 from 1092 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a K073/17 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a K073/17 autocmod 2.5c
diameter diameter 1.2 km n/a Lamy,P.L.,Toth,I.,Fernandez,Y.R.,Weaver,H.A. (2004) Comets II, pp. 223-264  

46P/Wirtanen          Discovered 1948-Jan-15 by Wirtanen, Carl A. at Lick Observatory, California
discovered on plate/photo taken on discovery date
Reference: comet.disLast Updated: 2003-08-29

[ 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
1912-Dec-31 15:32 01:19 Jupiter 0.551090365935348 0.549106955134616 0.553071004071307 6.61459081580481 6.37799528965823 2419768.147256433 79.0633142819944 13091.9867288556 177.803857096024 -8.18647142623275 6935.01236090944 T K073/17 CATAB v2.0c-linF95 2014-May-12 11:52:01 2014-May-12 11:52
1923-Dec-24 08:56 01:56 Jupiter 0.520309179563395 0.519568819183491 0.521050559053602 5.52998015643601 5.22731646928261 2423777.872191770 115.62782551174 5932.20002738533 72.6545524736688 -44.0277147559283 68010.714198789 T K073/17 CATAB v2.0c-linF95 2014-May-12 11:52:01 2014-May-12 11:52
1972-Apr-09 21:02 00:07 Jupiter 0.275523844253456 0.275466977945625 0.275580713973968 6.07422329175248 5.54506419797544 2441417.376717730 7.343397917103 358.994076660678 58.7603131090872 35.1534817379708 40992.6247503236 T K073/17 CATAB v2.0c-linF95 2014-May-12 11:52:01 2014-May-12 11:52
1984-Feb-25 22:23 00:11 Jupiter 0.466449712393747 0.466334133875311 0.466565282459364 6.34752175730198 6.05468806289601 2445756.432641494 11.219121977086 689.822991391604 49.348699801199 -8.09672814640019 22388.5486218218 T K073/17 CATAB v2.0c-linF95 2014-May-12 11:52:01 2014-May-12 11:52
2018-Dec-16 14:56 00:06 Earth 0.0776835980127914 0.0776434705856395 0.0777237842091416 10.073474343244 10.0700688724853 2458469.121978671 6.29628097117714 2707.09923835062 128.736864619816 58.6550954444129 51680.5803328747 T K073/17 CATAB v2.0c-linF95 2014-May-12 11:52:01 2014-May-12 11:52
2042-Nov-25 12:07 00:09 Jupiter 0.562456074786126 0.562283075652452 0.562629045695062 6.79819499571576 6.57294335843685 2467214.004744130 8.5304645798027 1250.09466841804 192.136189867823 -5.53905147125343 8803.35428748541 T K073/17 CATAB v2.0c-linF95 2014-May-12 11:52:01 2014-May-12 11:52
2054-Nov-19 03:51 00:04 Jupiter 0.116546571231547 0.116509885205999 0.116583258314912 6.5193346119219 5.28832442864226 2471590.660628824 3.68207122213624 191.542552695253 48.2069471987088 -24.8650960742895 17595.1635581501 T K073/17 CATAB v2.0c-linF95 2014-May-12 11:52:01 2014-May-12 11:52
2090-Aug-10 13:51 01:38 Jupiter 1.98277784327066 1.98007917137951 1.98547352935919 10.430813775222 10.3897784561302 2484639.076897250 98.1200424971736 37480.7594425452 254.877122099767 -0.760764106277455 2752.99274297028 T K073/17 CATAB v2.0c-linF95 2014-May-12 11:52:01 2014-May-12 11:52
2115-Jun-08 03:23 02:02 Jupiter 0.865199415989193 0.864416254429619 0.865983741799129 5.52420282063097 5.34404665320188 2493705.641079867 122.478489768859 8486.52990451551 282.31588355609 43.0184568093135 28711.0866155613 T K073/17 CATAB v2.0c-linF95 2014-May-12 11:52:01 2014-May-12 11:52
2151-Jan-13 13:44 00:45 Jupiter 1.34161144543258 1.34073975772475 1.34248293001168 7.44062944302405 7.35528872838943 2506709.072126249 44.5495966368551 9909.39647207189 445.920956724193 23.5933613914281 22333.5304323489 T K073/17 CATAB v2.0c-linF95 2014-May-12 11:52:01 2014-May-12 11:52
2161-Nov-11 23:03 01:11 Jupiter 1.90716535724724 1.90587489859402 1.90845508290267 10.5199995110651 10.4776971172003 2510664.460582776 70.942344920992 19202.8320250237 536.765614663153 4.99554426234063 8341.03032105018 T K073/17 CATAB v2.0c-linF95 2014-May-12 11:52:01 2014-May-12 11:52
2197-Mar-16 04:13 00:18 Jupiter 0.204076188525938 0.203574990738356 0.204583861719745 6.13571243199278 5.41718791927437 2523572.675557613 17.530491819585 6460.40992647104 208.96860522139 64.071559348407 13162.6782421687 T K073/17 CATAB v2.0c-linF95 2014-May-12 11:52:01 2014-May-12 11:52

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1991.8       1991 XVI   1991s 
 1986.4       1986 VI   1985q 
 1975.5       1974 XI   1974i 
 1964.7       1967 XIV   1967k 
 1959.3       1961 IV   1960m 
 1953.8   46P/1954 R2   1954 XI   1954j 
 1948.4   46P/1948 A1   1947 XIII   1948b 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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