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141P/Machholz 2-A
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000152
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

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.


:
Orbital Elements at Epoch 2450594.5 (1997-May-26.0) TDB
Reference: JPL 79 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7504734077906811 2.5671e-07  
a 3.010398055328779 2.5143e-07 au
q .751174367939751 8.2577e-07 au
i 12.79337930969478 3.8334e-05 deg
node 246.1551562177739 0.00028069 deg
peri 149.244253309364 0.00025908 deg
M 184.9627925251596 3.0582e-05 deg
tp 2451522.103095540126
(1999-Dec-09.60309554)
9.5223e-05 TDB
period 1907.806455621414
5.22
0.00023901
6.544e-07
d
yr
n .1886983865366679 2.364e-08 deg/d
Q 5.269621742717808 4.4011e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 2.065306462053333E-9 3.969E-10
A2 [EST] -1.308609240972262E-9 1.313E-10
A3 [EST] 1.529188050730791E-9 3.785E-10
DT [EST] 27.41521862663734 4.334
  Orbit Determination Parameters
   # obs. used (total)      411  
   data-arc span      2006 days (5.49 yr)  
   first obs. used      1994-08-15  
   last obs. used      2000-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      1  
   norm. resid. RMS      .80254  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2021-Aug-25 08:02:38  

Additional Information
 Earth MOID = .105828 au 
 Jupiter MOID = .630557 au 
 T_jup = 2.709 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 12.0   n/a ICQ 2005 Handbook  
comet total magnitude slope K1 30.0   n/a ICQ 2005 Handbook  

[ 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
1922-Oct-03 12:07 3_20:50 Jupiter 0.945651482890016 0.924310636421275 0.968713586146543 7.16735376200369 7.0412750769358 2423331.005083980 5569.97356089067 2312709.16753427 16507.1715812491 62.1616585687042 6754.99548412001 T 79 CATAB v2.0g-lin.ifort 2021-Aug-25 08:12:02 2021-Aug-25 08:12
1935-Mar-06 00:44 2_16:57 Jupiter 1.04965269163512 1.01019970393312 1.08939095579462 8.79785456854218 8.70564960038737 2427867.530587725 3896.98016607286 2156546.83843697 11824.1554992297 24.9962656234445 3972.78039404333 T 79 CATAB v2.0g-lin.ifort 2021-Aug-25 08:12:02 2021-Aug-25 08:12
1957-Aug-15 22:39 5_00:53 Earth 0.193847515452139 0.18795720509922 0.219205967705807 19.8135844529642 19.8128907130687 2436066.443436870 7252.83068540747 3262407.1992711 1498.3389124772 -75.8659027366132 18476.2144169049 T 79 CATAB v2.0g-lin.ifort 2021-Aug-25 08:12:02 2021-Aug-25 08:12
1970-Apr-03 02:50 09:29 Jupiter 0.978921695704523 0.973804532722583 0.984103505726587 7.2654853431863 7.14540102383602 2440679.617728756 568.868290596084 475427.924485068 5646.99940879454 58.0093078567062 19457.6068641324 T 79 CATAB v2.0g-lin.ifort 2021-Aug-25 08:12:02 2021-Aug-25 08:12
1979-Jan-04 02:04 1_00:21 Earth 0.221006240393802 0.206109479758734 0.236093286094038 23.4468916765344 23.4463774821786 2443877.586066335 1460.98422122602 814543.780740277 463.726002441219 23.3385459967669 27235.5270493887 T 79 CATAB v2.0g-lin.ifort 2021-Aug-25 08:12:02 2021-Aug-25 08:12
1982-Aug-21 16:30 01:58 Jupiter 1.02787856931641 1.02569753893829 1.03006046441447 8.85330134148597 8.75972866282368 2445203.187196000 117.994680573713 118607.377122754 2909.21090124697 25.1303586482146 14515.1700557942 T 79 CATAB v2.0g-lin.ifort 2021-Aug-25 08:12:02 2021-Aug-25 08:12
1994-Aug-07 03:14 < 00:01 Earth 0.316154896645247 0.316146706275018 0.316163087015513 24.6186788724949 24.6183365379543 2449571.634881117 0.527657580546868 408.4580822618 86.9512765960678 0.84669373958321 107757.866937517 T 79 CATAB v2.0g-lin.ifort 2021-Aug-25 08:12:02 2021-Aug-25 08:12
2000-Jan-15 10:05 < 00:01 Earth 0.318578670293404 0.318573841765916 0.31858349882091 27.4426354796686 27.4423307096397 2451558.919821933 0.233307598109998 240.796375505803 44.8406778828371 -0.767774180099118 180922.105716174 T 79 CATAB v2.0g-lin.ifort 2021-Aug-25 08:12:02 2021-Aug-25 08:12
2017-Oct-14 14:57 19:10 Jupiter 0.926379758379933 0.92377207499292 0.928994810853788 7.00864035584118 6.8769446207745 2458041.123003983 1149.78981322332 185151.050105185 4936.09557600679 46.8711883654766 17331.374307665 T 79 CATAB v2.0g-lin.ifort 2021-Aug-25 08:12:02 2021-Aug-25 08:12
2021-Jan-17 03:14 1_13:04 Earth 0.493793428953511 0.466687273392361 0.521049154271745 31.0528348937169 31.0526611268337 2459231.634951330 2223.81148025441 1421543.74763098 529.23361919681 17.5199352810148 40452.4573931081 T 79 CATAB v2.0g-lin.ifort 2021-Aug-25 08:12:02 2021-Aug-25 08:12
2030-Jan-23 16:39 1_15:59 Jupiter 1.17393285293341 1.15676727998653 1.1911055677325 9.40260467046925 9.3255521847707 2462525.193513031 2399.3754206644 868319.838892259 6759.78490146264 11.4554947290916 3761.48188031815 T 79 CATAB v2.0g-lin.ifort 2021-Aug-25 08:12:02 2021-Aug-25 08:12
2036-Dec-06 16:04 8_17:45 Earth 0.146282169433958 0.132717828488852 0.180285104963331 17.0653031527327 17.0642357691005 2465034.169285644 12585.3462739749 3016836.0752014 735.737411866714 -65.1278726294138 27801.2915256036 T 79 CATAB v2.0g-lin.ifort 2021-Aug-25 08:12:02 2021-Aug-25 08:12
2065-Apr-24 23:09 5_14:02 Jupiter 0.86781868993388 0.847633784927174 0.888472777465984 6.82835537683867 6.68388843610493 2475400.464352713 8041.57634463815 1439186.47079965 14937.0612940095 46.1817196001157 5584.67126429782 T 79 CATAB v2.0g-lin.ifort 2021-Aug-25 08:12:02 2021-Aug-25 08:12
2077-Jun-29 19:51 6_19:57 Jupiter 1.26300474867882 1.19464062943874 1.33137656058122 9.67140661147753 9.60181359175188 2479849.326942432 9837.44649997799 3412717.09463305 17257.9498857768 6.55258226335646 884.201277046595 T 79 CATAB v2.0g-lin.ifort 2021-Aug-25 08:12:02 2021-Aug-25 08:12
2112-Oct-11 01:35 5_06:30 Jupiter 0.895918511604973 0.869017232879374 0.92344016351176 6.97820557115335 6.84138186177201 2492735.566182270 7590.39555662306 1803113.18832855 25373.5062091927 42.5818369947841 2959.42553129698 T 79 CATAB v2.0g-lin.ifort 2021-Aug-25 08:12:02 2021-Aug-25 08:12
2124-Dec-25 19:49 7_11:39 Jupiter 1.11833977448776 1.04679653105296 1.1898643244666 9.21150949505321 9.12891677830957 2497194.325688119 10778.5735604321 3559619.3757927 28252.2697113244 4.91824127107956 370.331185077432 T 79 CATAB v2.0g-lin.ifort 2021-Aug-25 08:12:02 2021-Aug-25 08:12
2160-Mar-20 16:10 20:25 Jupiter 1.04524544946552 1.02793525138593 1.06271861898238 7.55246423114853 7.44439392570257 2510063.173613395 1225.44899495816 1087553.39042874 37497.0173433427 39.1237851322399 1538.13948560598 T 79 CATAB v2.0g-lin.ifort 2021-Aug-25 08:12:02 2021-Aug-25 08:12
2172-Jun-27 11:03 5_20:49 Jupiter 0.847401158447491 0.797115859200638 0.897674364147976 8.43550377706545 8.31616604211958 2514544.960520289 8449.4654407408 2501903.18883511 34976.6181450151 4.7047109390269 236.370390427173 T 79 CATAB v2.0g-lin.ifort 2021-Aug-25 08:12:02 2021-Aug-25 08:12
2189-Dec-22 15:35 8_08:51 Earth 0.228955486549203 0.180780913428122 0.290488539623969 21.50180130311 21.5012600605701 2520932.149651681 12050.9957805378 3898625.65560757 25993.6838479335 43.7758395068628 824.973621601465 T 79 CATAB v2.0g-lin.ifort 2021-Aug-25 08:12:02 2021-Aug-25 08:12

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1999.9   141P-A/1999 P1       
 1994.7   141P-A/1994 P1-A       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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