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88P/Howell
Classification: Jupiter-family Comet          SPK-ID: 1000046
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2457164.5 (2015-May-22.0) TDB
Reference: JPL K084/22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5630439664079079 2.0864e-07  
a 3.109168782208625 6.5675e-07 AU
q 1.358570058842236 6.7992e-07 AU
i 4.382538967002391 1.6745e-05 deg
node 56.69755739952744 0.0002903 deg
peri 235.9155835285015 0.0002922 deg
M 8.228433960368278 1.9135e-05 deg
tp 2457118.730142343323
(2015-Apr-06.23014234)
9.6449e-05 JED
period 2002.464726066326
5.48
0.00063448
1.737e-06
d
yr
n .1797784476869112 5.6962e-08 deg/d
Q 4.859767505575014 1.0265e-06 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 8.901744154018673E-9 6.071E-11
A2 [EST] -7.940018010575182E-10 2.489E-11
A3 [EST] -1.481346095823411E-10 7.316E-11
DT [EST] 19.16004784756787 .8905
  Orbit Determination Parameters
   # obs. used (total)      1448  
   data-arc span      4100 days (11.23 yr)  
   first obs. used      2004-02-18  
   last obs. used      2015-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      1  
   fit RMS      .76403  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2015-May-12 21:30:56  

Additional Information
 Earth MOID = .349888 AU 
 T_jup = 2.947 
[ 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 11.1 mag 1. K084/22 2 parameter fit from 392 observations, autocmod 2.6
comet total magnitude slope K1 12.   n/a K084/22 autocmod 2.6
diameter diameter 4.4 km n/a Scotti,J (1994) BAAS 26:1375  

88P/Howell          Discovered 1981-Aug-29 by Howell, Ellen at Palomar Mountain Observatory, California
discovered on plate/photo taken on discovery date as well as 8/30
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
1907-Jan-22 12:45 00:34 Jupiter 0.191799973867561 0.191717398583343 0.191882606648846 4.49178872459955 3.36805777421937 2417598.031220503 33.7838280545946 479.391947279598 46.3170555697727 -54.3977975007142 36541.3118025996 T K084/22 CATAB v2.0c-linF95 2015-May-12 21:42:01 2015-May-12 21:42
1978-Oct-13 19:07 00:04 Jupiter 0.580929579329992 0.580894273882644 0.580964883611633 4.86583136674706 4.55633858311339 2443795.296706823 3.94805189292991 198.384729724489 15.5103806339576 -16.479461994527 129695.216995241 T K084/22 CATAB v2.0c-linF95 2015-May-12 21:42:01 2015-May-12 21:42
1990-Aug-22 13:15 00:03 Jupiter 0.52744723008699 0.527434418301681 0.527460041817311 4.80297350803806 4.45609396714031 2448126.051959135 2.69041149431347 62.5409299726249 13.4187268116306 -22.9388389884456 202222.16821735 T K084/22 CATAB v2.0c-linF95 2015-May-12 21:42:01 2015-May-12 21:42
2002-Jun-09 00:02 < 00:01 Jupiter 1.87720021069275 1.8771918282491 1.87720859311483 9.51126752365226 9.46370847911044 2452434.501128775 0.508909719383807 90.7538352444512 20.4382487341375 -6.17121267469288 537505.234677262 T K084/22 CATAB v2.0c-linF95 2015-May-12 21:42:01 2015-May-12 21:42
2031-Sep-13 09:51 00:08 Mars 0.0743870937973004 0.0743757916191125 0.0743984001939959 6.3826061160052 6.38200309690653 2463122.910726329 7.63013359430358 792.962762691798 97.9258079970902 -59.1943198921289 76986.7113946184 T K084/22 CATAB v2.0c-linF95 2015-May-12 21:42:01 2015-May-12 21:42
2061-May-11 23:20 00:06 Jupiter 0.706131813021615 0.706039938288541 0.706223681848391 5.2845127015775 5.05242765344567 2473956.472342983 6.2251055622229 583.63434705618 87.5633383689513 -18.8575637947395 36970.0391831588 T K084/22 CATAB v2.0c-linF95 2015-May-12 21:42:01 2015-May-12 21:42
2073-Apr-17 23:56 00:08 Jupiter 0.48183016670736 0.481817173561365 0.481843160010744 4.47567388374614 4.06396378547127 2478315.497218437 8.09843456474198 104.539840021368 42.0947136193596 -65.4539650728759 117268.753621728 T K084/22 CATAB v2.0c-linF95 2015-May-12 21:42:01 2015-May-12 21:42
2145-Mar-27 23:42 00:14 Jupiter 0.583650079877586 0.58326899454989 0.584031024984914 5.09605932020141 4.80284493179665 2504591.487644323 13.8011175099024 2262.6410624894 92.7470927616683 -15.7141608448947 21249.5916775667 T K084/22 CATAB v2.0c-linF95 2015-May-12 21:42:01 2015-May-12 21:42
2157-Feb-08 14:25 00:34 Jupiter 0.589360115604133 0.588914349378471 0.589805723798434 5.21473868339886 4.93144191511687 2508927.100549979 33.6481169223896 2660.06762243323 97.6085823535514 -17.7469494744798 23495.4993086686 T K084/22 CATAB v2.0c-linF95 2015-May-12 21:42:01 2015-May-12 21:42
2170-Jul-21 01:59 06:25 Earth 0.39428039416446 0.393405569768943 0.395157545190973 3.45879527580402 3.45684091370365 2513837.582662975 385.197312386401 34535.2371699992 200.051281111801 24.6023336573993 36359.9153625372 T K084/22 CATAB v2.0c-linF95 2015-May-12 21:42:01 2015-May-12 21:42
2181-Jul-23 10:53 04:31 Earth 0.361455120130833 0.360819993488721 0.362092611829966 3.60446171944748 3.60241602476389 2517857.953220511 271.299889278247 27466.7362330265 232.821108612227 31.1505676535785 36952.9136900669 T K084/22 CATAB v2.0c-linF95 2015-May-12 21:42:01 2015-May-12 21:42
2192-Jul-30 05:25 04:22 Earth 0.341375301625854 0.34102580198847 0.341726855566129 3.45324875801528 3.45098778909158 2521882.725360982 262.084925434714 14345.2671155616 432.926478970086 -63.1958501781295 31156.2924221089 T K084/22 CATAB v2.0c-linF95 2015-May-12 21:42:01 2015-May-12 21:42

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1993.3       1993 II   1992c 
 1987.8   88P/1987 E1   1987 VI   1987h 
 1982.4   88P/1981 Q1   1981 X   1981k 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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