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103P/Hartley 2
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000041
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2455456.5 (2010-Sep-17.0) TDB
Reference: JPL 183 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6951452964967095 1.3729e-06  
a 3.472769398388862 1.4784e-05 AU
q 1.058690085281137 3.5518e-07 AU
i 13.61716956119923 2.3585e-05 deg
node 219.7626609177958 5.3186e-05 deg
peri 181.1954811299036 0.00011319 deg
M 353.7167049330382 3.6019e-05 deg
tp 2455497.756967202996
(2010-Oct-28.25696720)
3.8839e-05 JED
period 2363.808803309979
6.47
0.015094
4.133e-05
d
yr
n .1522965814730453 9.7251e-07 deg/d
Q 5.886848711496587 2.5061e-05 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 7.225261187420759E-10 8.666E-10
A2 [EST] -1.525011674392043E-9 3.204E-10
A3 [EST] -3.798639416296654E-10 4.441E-10
  Orbit Determination Parameters
   # obs. used (total)      2638  
   # delay obs. used      1  
   # Doppler obs. used      1  
   data-arc span      84 days  
   first obs. used      2010-08-01  
   last obs. used      2010-10-24  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      2  
   fit RMS      .37548  
   data source      ORB  
   producer      Steven R. Chesley  
   solution date      2010-Oct-24 11:48:36  

Additional Information
 Earth MOID = .0668221 AU 
 T_jup = 2.640 
[ 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 14.6 mag 1. 183 from 277 observations, assumed slope, autocmod 2.4a
comet total magnitude slope K1 17.   n/a 183 autocmod 2.4a
comet nuclear magnitude M2 17.7 mag 0.7 183 from 1984 observations, autocmod 2.4a
comet nuclear magnitude slope K2 5.   n/a 183 autocmod 2.4a
comet nuclear phase coefficient PC 0.03   n/a 183 autocmod 2.4a
diameter diameter 1.6 km n/a Lamy,P.L.,Toth,I.,Fernandez,Y.R.,Weaver,H.A. (2004) Comets II, pp. 223-264  
rotation period rot_per 18.1 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Harmon, J.K.; Nolan, M.C; Howell, E.S.; Giorgini, J.D. (2010) CBET 2515.]
[Belton, M.J.S.; Thomas, P.; Lie, J.-Y.; Williams, J.; et al. (2012) Icarus, in press.]

103P/Hartley 2          Discovered 1986-Mar-15 by Hartley, Malcolm at U. K. Schmidt Telescope Unit, Siding Spring
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
1971-May-01 00:45 09:09 Jupiter 0.100366301855207 0.0923880493688473 0.10832152471697 8.18789668029392 7.08258625320287 2441072.531324975 549.474523332393 49477.3793031964 1635.93919380609 -7.7498805335481 131.992836516424 T 183 CATAB v2.0c-linF95 2010-Dec-16 13:05:01 2010-Dec-16 13:05
1982-Nov-10 04:57 1_17:45 Jupiter 0.315227922974596 0.308312623010513 0.322262100153313 6.67325284613495 6.25765700121056 2445283.706743574 2505.16482405431 42500.8120460833 165.370191236052 39.9866218053802 20022.569257592 T 183 CATAB v2.0c-linF95 2010-Dec-16 13:05:01 2010-Dec-16 13:05
1993-Dec-19 19:41 03:00 Jupiter 0.37402178480293 0.373779565383233 0.374305461715475 7.09599812743137 6.76933681879366 2449341.320695134 180.156032718509 23350.5575303895 379.099483065604 81.8277957961844 17136.4713253265 T 183 CATAB v2.0c-linF95 2010-Dec-16 13:05:01 2010-Dec-16 13:05
2005-Dec-10 08:03 00:43 Jupiter 1.82548552976783 1.82477211860425 1.82619876844043 11.7456995823642 11.7061292360674 2453714.836061413 43.0482069407215 10545.8658537291 98.7474597354438 11.8204464551225 109198.460797116 T 183 CATAB v2.0c-linF95 2010-Dec-16 13:05:01 2010-Dec-16 13:05
2010-Oct-20 17:33 < 00:01 Earth 0.120878738295872 0.120878711718914 0.120878764875076 11.8797070428581 11.8778514161068 2455490.231647522 0.0194962621180335 9.23538551263621 4.18023540193535 5.25403673971218 1450516.12387827 T 183 CATAB v2.0c-linF95 2010-Dec-16 13:05:01 2010-Dec-16 13:05
2023-Sep-25 05:24 02:20 Earth 0.396136428554651 0.390570714741288 0.401698748349912 18.6599218130516 18.6595613490104 2460212.725086595 140.374920800792 268441.669108533 91.8665838301914 -7.90913558302132 76140.8776563154 T 183 CATAB v2.0c-linF95 2010-Dec-16 13:05:01 2010-Dec-16 13:05
2054-Mar-17 00:35 07:34 Jupiter 0.759329686516805 0.738887523157076 0.779645777080021 8.61549589039032 8.48503359230769 2471343.524743890 454.161159664169 191217.394255736 1179.45496500587 -20.244795855239 4720.97147491912 T 183 CATAB v2.0c-linF95 2010-Dec-16 13:05:01 2010-Dec-16 13:05
2065-Nov-16 22:57 14:02 Jupiter 0.260043750377149 0.255923160455933 0.264324368409552 6.92830717966496 6.44103862720752 2475606.456793890 842.658569041984 40783.6764740256 773.56552892821 58.7525042908901 4888.86200571573 T 183 CATAB v2.0c-linF95 2010-Dec-16 13:05:01 2010-Dec-16 13:05
2076-Dec-13 22:30 16:22 Jupiter 0.249179524949007 0.246290699172675 0.252555781859372 6.94991305845104 6.44226662413785 2479651.437718617 982.293069765674 60831.2165704658 862.308102022318 -78.9213117611783 4847.29544702796 T 183 CATAB v2.0c-linF95 2010-Dec-16 13:05:01 2010-Dec-16 13:05
2088-Jul-27 15:34 06:18 Jupiter 0.408361426650425 0.364165763361443 0.452006795759753 7.97312944239147 7.70859239447691 2483895.149057687 378.579277341263 340498.765713824 849.284223980355 19.1061420108638 3047.00799113223 T 183 CATAB v2.0c-linF95 2010-Dec-16 13:05:01 2010-Dec-16 13:05
2159-Aug-30 02:47 1_00:31 Jupiter 0.338852832783272 0.30229824995341 0.376112694442041 8.03444827162791 7.71705938795482 2509859.616132547 1471.21512809455 300553.845199921 3570.00879540511 29.3672123776594 913.349404868524 T 183 CATAB v2.0c-linF95 2010-Dec-16 13:05:01 2010-Dec-16 13:05

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1991.4   103P/1991 N1   1991 XV   1991t 
 1984.9   103P/1986 E2   1985 V   1986c 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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