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C/1999 S3 (LINEAR)
Classification: Halley-type Comet*          SPK-ID: 1000272
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2451475.5 (1999-Oct-24.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8999627638680425 1.6444e-05  
a 18.94238947528489 0.0031725 au
q 1.894944288842581 5.9556e-06 au
i 70.56090888444659 0.00021837 deg
node 11.8781953617595 0.00011275 deg
peri 44.12816462432897 0.00056191 deg
M 359.8085318276592 6.0788e-05 deg
tp 2451491.515653370344
(1999-Nov-09.01565337)
0.0011274 TDB
period 30112.76048042363
82.44
7.5649
0.02071
d
yr
n .01195506470534433 3.0034e-06 deg/d
Q 35.98983466172721 0.0060276 au
  Orbit Determination Parameters
   # obs. used (total)      638  
   data-arc span      158 days  
   first obs. used      1999-09-24  
   last obs. used      2000-02-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      4  
   norm. resid. RMS      .56431  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:30:01  

Additional Information
 Earth MOID = 1.07488 au 
 Jupiter MOID = 1.75414 au 
 T_jup = 0.828 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 4.8   0.8 36 2 parameter fit from 268 observations, autocmod 2.9c
comet total magnitude slope K1 29.25   n/a 36 autocmod 2.9c
comet nuclear magnitude M2 13.3   0.5 36 from 6 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 36 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 36 autocmod 2.9c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1999.9   C/1999 S3       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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