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JPL Small-Body Database Browser
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349P/Lemmon (2017 B1)
Classification: Encke-type Comet          SPK-ID: 1003494
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457280.5 (2015-Sep-15.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3005115188886394 1.5437e-06  
a 3.56811615127807 9.7869e-07 au
q 2.495856147086411 4.8574e-06 au
i 5.498786149910948 7.9571e-05 deg
node 331.8155633841571 0.00045067 deg
peri 256.260579887085 0.0010754 deg
M 255.7555603075682 0.00067899 deg
tp 2457993.365013249004
(2017-Aug-27.86501325)
0.0043602 TDB
period 2461.823436595948
6.74
0.0010129
2.773e-06
d
yr
n .1462330704340783 6.0165e-08 deg/d
Q 4.640376155469728 1.2728e-06 au
  Orbit Determination Parameters
   # obs. used (total)      123  
   data-arc span      3069 days (8.40 yr)  
   first obs. used      2010-03-14  
   last obs. used      2018-08-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .53707  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-25 14:45:53  

Additional Information
 Earth MOID = 1.49229 au 
 Jupiter MOID = .631766 au 
 T_jup = 3.031 
[ 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
absolute magnitude H 15.7   n/a MPO176524  
comet total magnitude M1 6.9   0.6 10 from 75 observations, assumed slope, autocmod 2.6n
comet total magnitude slope K1 26.   n/a 10 autocmod 2.6n
comet nuclear magnitude M2 15.7   0.6 10 from 24 observations, autocmod 2.6n
comet nuclear magnitude slope K2 5.   n/a 10 autocmod 2.6n
comet nuclear phase coefficient PC 0.03   n/a 10 autocmod 2.6n
diameter diameter 2.983 km 0.404 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.104   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2017.7   349P/2017 B1       
 2010.9   349P/2010 EY90       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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