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13P/Olbers
Classification: Halley-type Comet* [NEO]          SPK-ID: 1000066
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2435760.5 (1956-Oct-14.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.930297147462082 3.3699e-07  
a 16.9067774347548 0.00011337 AU
q 1.17845061442612 3.1063e-06 AU
i 44.609885733805 0.00011665 deg
node 86.10312835462277 0.00012038 deg
peri 64.64120651677283 0.00070188 deg
M 1.656899068407468 2.4669e-05 deg
tp 2435643.635331048669
(1956-Jun-19.13533105)
0.00061193 JED
period 25391.57732940006
69.52
0.2554
0.0006992
d
yr
n .01417792976504724 1.4261e-07 deg/d
Q 32.63510425508353 0.00021884 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 9.451067991051224E-9 2.086E-9
A2 [EST] 6.487207540562958E-10 2.294E-12
  Orbit Determination Parameters
   # obs. used (total)      91  
   data-arc span      51679 days (141.49 yr)  
   first obs. used      1815-03-17  
   last obs. used      1956-09-12  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   fit RMS      1.1672  
   data source      ORB  
   producer      M.S.W. Keesey  
   solution date      2001-Nov-28 15:48:32  

Additional Information
 Earth MOID = .477199 AU 
 T_jup = 1.249 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 5. mag n/a MPC data tape  
comet total magnitude slope K1 15.0   n/a MPC data tape  
comet nuclear magnitude M2 11.5 mag n/a MPC data tape  
comet nuclear magnitude slope K2 10.0   n/a MPC data tape  

13P/Olbers          Discovered 1815-Mar-06 by Olbers, Heinrich Wilhelm at Bremen, Germany
Reference: comet.disLast Updated: 2003-08-29

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1956.5   13P/1956 A1   1956 IV   1956a 
 1886.9   13P/1887 Q1   1887 V   1887f 
 1817.4   13P/1815 E1   1815    
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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