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280P/Larsen
Classification: Jupiter-family Comet          SPK-ID: 1000492
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 2454768.5 (2008-Oct-29.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4181327320221807 6.0795e-07  
a 4.511665236987292 7.9937e-07 au
q 2.625190325476296 2.4974e-06 au
i 11.77967012151685 1.6299e-05 deg
node 131.4967467273075 0.00014942 deg
peri 104.8337410245009 0.00081673 deg
M 167.8517893863047 0.00031598 deg
tp 2453136.473511882065
(2004-May-10.97351188)
0.0026596 TDB
period 3500.287592229828
9.58
0.00093026
2.547e-06
d
yr
n .1028486918615351 2.7334e-08 deg/d
Q 6.398140148498287 1.1336e-06 au
  Orbit Determination Parameters
   # obs. used (total)      171  
   data-arc span      3715 days (10.17 yr)  
   first obs. used      2004-04-19  
   last obs. used      2014-06-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      1  
   norm. resid. RMS      .7371  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:28:13  

Additional Information
 Earth MOID = 1.64362 au 
 Jupiter MOID = .472367 au 
 T_jup = 2.809 
[ 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 15.0   1. 34 2 parameter fit from 78 observations, autocmod 2.9c
comet total magnitude slope K1 4.5   n/a 34 autocmod 2.9c

[ 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
1904-Jan-06 11:38 00:19 Jupiter 0.441060799515027 0.440992602958525 0.441128999867288 6.92830901525737 6.64534599589954 2416485.984765495 19.4374076514776 3990.60013271144 267.506011227284 32.9283677398603 132632.376089963 T 34 CATAB v2.0g-lin.ifort 2021-Apr-15 23:28:14 2021-Apr-15 23:28
1918-Sep-25 03:40 02:46 Jupiter 1.46518546669891 1.46498654731224 1.46538438571422 4.16302116943762 4.02175918038227 2421861.652447346 166.461922747182 9842.95257214017 396.593024502946 -11.0403454857333 83105.7626590337 T 34 CATAB v2.0g-lin.ifort 2021-Apr-15 23:28:14 2021-Apr-15 23:28
1985-Jun-25 05:46 08:15 Jupiter 1.75533183630883 1.75488363307438 1.75578002651803 4.33321008471683 4.2203820085599 2446241.740213057 495.281603794504 21096.2407074834 288.631653107047 -20.9559455408439 98456.8402675915 T 34 CATAB v2.0g-lin.ifort 2021-Apr-15 23:28:14 2021-Apr-15 23:28
1987-Aug-20 09:24 04:47 Jupiter 1.52535733030058 1.52500719181326 1.52570746686951 4.38994942227781 4.26158033631099 2447027.891614396 286.743860725463 17236.6451830365 394.174083087734 7.85636830992724 54341.8798014486 T 34 CATAB v2.0g-lin.ifort 2021-Apr-15 23:28:14 2021-Apr-15 23:28
2002-Mar-11 00:14 00:18 Jupiter 0.509317066378824 0.509290270988549 0.509343888375337 6.98976566468514 6.74764501095745 2452344.509560517 17.8704942919769 6253.4516780099 337.722612147898 78.846994606483 216364.009384105 T 34 CATAB v2.0g-lin.ifort 2021-Apr-15 23:28:14 2021-Apr-15 23:28
2049-Apr-02 14:51 00:46 Jupiter 1.31286006742009 1.31283423477056 1.31288590106359 4.17548670648341 4.01800227186396 2469534.118657843 45.91333384885 2292.67127457825 315.886686740775 55.889388940955 479500.466243156 T 34 CATAB v2.0g-lin.ifort 2021-Apr-15 23:28:14 2021-Apr-15 23:28
2093-Sep-28 19:14 01:08 Jupiter 1.02477568974145 1.02453689308122 1.02501450577768 8.43605139423374 8.33749809681848 2485784.301651524 67.6114136448875 13848.0793039537 225.232845178049 31.559503843412 280775.336115592 T 34 CATAB v2.0g-lin.ifort 2021-Apr-15 23:28:14 2021-Apr-15 23:28
2107-Nov-20 03:25 00:35 Jupiter 1.75252116699678 1.75249333281229 1.75254900135271 4.54501322591934 4.43739924878174 2490948.642242456 35.2220148505291 1656.42961062296 328.958815869542 -35.4190782914779 323639.538217266 T 34 CATAB v2.0g-lin.ifort 2021-Apr-15 23:28:14 2021-Apr-15 23:28
2120-Jun-03 01:28 00:20 Jupiter 1.98082443810919 1.98057338556543 1.981075491028 11.3870517964578 11.34943727332 2495527.561258813 19.8450147617164 12592.7902725664 323.098725646417 7.7086992847173 84007.6936450724 T 34 CATAB v2.0g-lin.ifort 2021-Apr-15 23:28:14 2021-Apr-15 23:28
2165-Jan-28 22:37 01:38 Jupiter 1.7799892031346 1.77919089690531 1.78078756676116 10.67125226311 10.6265661623821 2511838.442033041 98.0452079392291 42894.1964092046 188.646283012744 22.4529291379365 379040.662351704 T 34 CATAB v2.0g-lin.ifort 2021-Apr-15 23:28:14 2021-Apr-15 23:28
2178-Feb-17 22:49 04:03 Jupiter 1.89967503180905 1.89958285467429 1.89976721514749 4.67936793280389 4.58309165139869 2516606.450687555 242.642367925561 7151.17084844557 250.044392574143 -51.1260197085513 663590.968010237 T 34 CATAB v2.0g-lin.ifort 2021-Apr-15 23:28:14 2021-Apr-15 23:28
2191-Nov-08 21:45 00:52 Jupiter 0.792399974319989 0.792386516210908 0.79241343274135 8.22469060428952 8.09368083520308 2521618.406390818 52.2150174872852 1384.13297771109 505.778336122974 -70.0381762894847 201605.314855286 T 34 CATAB v2.0g-lin.ifort 2021-Apr-15 23:28:14 2021-Apr-15 23:28

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2013.9   280P/2013 C1       
 2004.4   280P/2004 H2       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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