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82P/Gehrels 3
Classification: Encke-type Comet          SPK-ID: 1000031
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.


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:
Orbital Elements at Epoch 2452358.5 (2002-Mar-25.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1238890301135609 6.7329e-07  
a 4.138932388516853 2.5154e-07 au
q 3.626164069197896 2.871e-06 au
i 1.12658939241537 2.2149e-05 deg
node 239.6239758071735 0.0017921 deg
peri 227.6579311368321 0.0018046 deg
M 24.03667946810931 0.000167 deg
tp 2452153.146127854093
(2001-Aug-31.64612785)
0.001411 TDB
period 3075.607596740213
8.42
0.00028038
7.676e-07
d
yr
n .1170500425286887 1.067e-08 deg/d
Q 4.651700707835809 2.827e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] 2.93561772446461E-11 5.002E-12
ALN [SET] .0408373333128795 n/a
NK [SET] 2.6 n/a
NM [SET] 2. n/a
NN [SET] 3. n/a
R0 [SET] 5. n/a
  Orbit Determination Parameters
   # obs. used (total)      140  
   data-arc span      16277 days (44.56 yr)  
   first obs. used      1975-10-27  
   last obs. used      2020-05-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63397  
   source      ORB  
   producer      Javier Roa  
   solution date      2020-Jun-02 14:00:46  

Additional Information
 Earth MOID = 2.64312 au 
 Jupiter MOID = .511208 au 
 T_jup = 3.027 
 Nongrav. accels. using CO driven g(r) 
[ 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
comet total magnitude M1 7.5   1. 18 from 56 observations, assumed slope, autocmod 2.8
comet total magnitude slope K1 18.5   n/a 18 autocmod 2.8
comet nuclear magnitude M2 16.4   1. 18 from 14 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 18 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 18 autocmod 2.8
diameter diameter 1.46 km n/a Lamy,P.L.,Toth,I.,Fernandez,Y.R.,Weaver,H.A. (2004) Comets II, pp. 223-264  

82P/Gehrels 3          Discovered 1975-Oct-27 by Gehrels, Tom at Palomar Mountain Observatory, California
discovered on plate/photo taken on discovery date as well as 10/28,30
Reference: comet.disLast Updated: 2003-08-29

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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
1901-Dec-11 15:40 7_16:28 Saturn 1.62381050351129 1.6230003482549 1.62462311584818 0.102722868314803 n/a 2415730.152852246 11067.8674959293 107524.059097443 726.487801537965 -67.8990218783319 309722.776807753 F 18 CATAB v2.0f-lin.ifort 2020-Jun-02 14:02:02 2020-Jun-02 14:02
1970-Aug-15 11:23 01:11 Jupiter 0.00144213076325486 0.00143825534583266 0.00144600618101275 34.2044714554207 n/a 2440813.974481824 71.2409886892481 193.25453272066 11.8755595717786 -0.326514222666065 745.372686835724 F 18 CATAB v2.0f-lin.ifort 2020-Jun-02 14:02:02 2020-Jun-02 14:02
1973-Mar-24 21:27 00:18 Jupiter 0.0406966637175556 0.0406955539597712 0.0406977735110654 6.18182311706633 n/a 2441766.393519355 17.7652915627855 85.6442419395943 21.703376784371 52.087820345015 222338.503435875 F 18 CATAB v2.0f-lin.ifort 2020-Jun-02 14:02:02 2020-Jun-02 14:02
2000-Aug-21 07:59 00:10 Jupiter 1.25324110750687 1.25322666225463 1.25325555261166 2.45726286709802 2.16481169099801 2451777.832353530 10.3410891745341 515.431141232059 195.621137686677 71.4400669611226 104317.305772059 T 18 CATAB v2.0f-lin.ifort 2020-Jun-02 14:02:02 2020-Jun-02 14:02
2028-Apr-03 01:04 00:13 Jupiter 1.54730024174126 1.54729376793396 1.54730671553958 2.95299621762603 2.76140316040055 2461864.544100644 12.8314128902004 384.833773886864 183.371631695652 69.9348019647933 251896.853678889 T 18 CATAB v2.0f-lin.ifort 2020-Jun-02 14:02:02 2020-Jun-02 14:02
2057-Aug-08 08:07 03:39 Jupiter 0.123155532233457 0.123112959828288 0.123198104970768 3.36909478724011 n/a 2472583.838209135 218.773119789605 2146.82756273921 125.302299589163 -8.57311958806687 22971.2361469169 F 18 CATAB v2.0f-lin.ifort 2020-Jun-02 14:02:02 2020-Jun-02 14:02
2060-Mar-31 10:21 5_14:04 Jupiter 0.418807025237384 0.418116335627841 0.419498963628393 0.730036524138189 n/a 2473549.931373309 8043.79171698435 49891.8846986443 535.608337910503 -46.2976407707323 84436.1481893477 F 18 CATAB v2.0f-lin.ifort 2020-Jun-02 14:02:02 2020-Jun-02 14:02

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1993.2       1993 XIV   1992v 
 1984.8   82P/1984 P1   1985 IV   1984l 
 1976.4   82P/1975 U1   1977 VII   1975o 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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