Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
280P/Larsen
Classification: Jupiter-family Comet          SPK-ID: 1000492
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
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

[ show close-approach data ]
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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-18 12:58 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin