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84P/Giclas
Classification: Jupiter-family Comet          SPK-ID: 1000033
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4950370873283377 2.1787e-07  
a 3.64129988065612 4.3498e-08 AU
q 1.838721393647091 7.9827e-07 AU
i 7.287140451452368 1.2081e-05 deg
node 112.3813030815116 6.5231e-05 deg
peri 276.4703221093038 8.1826e-05 deg
M 42.93772433397255 1.6866e-05 deg
tp 2456496.794982357683
(2013-Jul-23.29498236)
0.00011661 JED
period 2537.950206760573
6.95
4.5476e-05
1.245e-07
d
yr
n .1418467545348347 2.5417e-09 deg/d
Q 5.443878367665149 6.5031e-08 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -2.254523752598398E-11 3.549E-13
  Orbit Determination Parameters
   # obs. used (total)      1236  
   data-arc span      12977 days (35.53 yr)  
   first obs. used      1978-09-11  
   last obs. used      2014-03-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .70379  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2014-May-12 11:48:01  

Additional Information
 Earth MOID = .860158 AU 
 T_jup = 2.871 
[ 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 12.0 mag 1. 38 from 352 observations, assumed slope, autocmod 2.5c
comet total magnitude slope K1 15.   n/a 38 autocmod 2.5c
comet nuclear magnitude M2 15.3 mag 0.8 38 from 676 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 38 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 38 autocmod 2.5c
diameter diameter 1.80 km n/a Lamy,P.L.,Toth,I.,Fernandez,Y.R.,Weaver,H.A. (2004) Comets II, pp. 223-264  

84P/Giclas          Discovered 1978-Sep-08 by Giclas, Henry L. at Lowell Observatory
First known observation: 1978/09/03
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
1923-Mar-02 04:55 < 00:01 Jupiter 1.13971884903311 1.13970783224027 1.13972986573721 5.94439770338279 5.8180317176891 2423480.704655008 0.361024672373429 89.9937454171861 9.34049953086727 -9.8634786490977 355801.831067567 T 38 CATAB v2.0c-linF95 2014-May-12 11:52:05 2014-May-12 11:52
1934-Feb-06 04:15 00:01 Jupiter 0.958638417201157 0.958596476183077 0.958680357520039 6.20312938234915 6.05901621848099 2427474.677204723 1.4698452001101 351.624669819246 17.9910828407138 -23.2385523670047 324818.260434084 T 38 CATAB v2.0c-linF95 2014-May-12 11:52:05 2014-May-12 11:52
1981-Aug-18 10:01 00:01 Jupiter 0.540697244804878 0.540694095500438 0.540700394107554 4.20232996380497 3.81136486100445 2444834.917580693 1.02302627057754 13.3550592424301 10.5566353773437 -81.2315465690689 531355.943545592 T 38 CATAB v2.0c-linF95 2014-May-12 11:52:05 2014-May-12 11:52
2018-Apr-03 23:43 < 00:01 Jupiter 1.10285207463285 1.10284390184535 1.10286024739927 6.4409536498292 6.32058744625516 2458212.487984213 0.539674831034973 60.1884517122554 9.80227001260971 -19.3289980093318 655064.583967081 T 38 CATAB v2.0c-linF95 2014-May-12 11:52:05 2014-May-12 11:52
2029-Mar-13 17:42 < 00:01 Jupiter 1.76185248736055 1.76184566805401 1.76185930664615 8.38551711981756 8.32798798157992 2462209.237773117 0.619481890565348 74.402398221705 20.4172918413628 -3.50526042892498 504846.919825546 T 38 CATAB v2.0c-linF95 2014-May-12 11:52:05 2014-May-12 11:52
2065-Sep-27 03:09 < 00:01 Jupiter 0.99448639374746 0.994460161745218 0.994512625396545 6.18921541268413 6.05003721570956 2475555.631295674 0.979763356413721 230.328298511662 9.34706236072475 -20.7463963783272 579657.22643466 T 38 CATAB v2.0c-linF95 2014-May-12 11:52:05 2014-May-12 11:52
2076-Aug-20 13:54 00:01 Jupiter 1.29740238343037 1.29739051327984 1.29741425348552 6.89499909349418 6.79965380656992 2479536.078870838 1.44332206500001 114.442039919642 16.7738070147761 -5.74419721854389 233372.7661782 T 38 CATAB v2.0c-linF95 2014-May-12 11:52:05 2014-May-12 11:52
2124-Feb-17 07:08 00:04 Jupiter 0.672904595981807 0.672875824317349 0.672933370437842 4.50344666346357 4.21467915635776 2496881.797177842 4.3575207197654 268.998883223967 10.992555838786 -46.0047729486469 491652.877363226 T 38 CATAB v2.0c-linF95 2014-May-12 11:52:05 2014-May-12 11:52
2160-May-07 03:06 00:28 Jupiter 0.425223159100882 0.425170720513033 0.425275600498243 3.89449507055658 3.34412849785863 2510110.628953597 28.3045366286456 149.785451685196 6.79500567503478 26.8481870333552 267124.196880251 T 38 CATAB v2.0c-linF95 2014-May-12 11:52:05 2014-May-12 11:52

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1992.7       1992 XXV   1992l 
 1985.8   84P/1985 M1   1985 XV   1985g 
 1978.8   84P/1978 R2   1978 XXII   1978k 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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