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38P/Stephan-Oterma
Classification: Halley-type Comet*          SPK-ID: 1000089
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2444720.5 (1981-Apr-26.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.860022494401565 9.5562e-08  
a 11.2476696975501 9.1699e-06 AU
q 1.57442074805817 2.1661e-06 AU
i 17.981415367796 3.022e-05 deg
node 79.18837876601667 3.044e-05 deg
peri 358.1910370660319 0.00026829 deg
M 3.705608922904022 1.2982e-05 deg
tp 2444578.676127067322
(1980-Dec-05.17612707)
0.00035548 JED
period 13778.19282012952
37.72
0.016849
4.613e-05
d
yr
n .02612824516971855 3.1952e-08 deg/d
Q 20.92091864704202 1.7056e-05 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.272538325643691E-9 1.235E-9
A2 [EST] -3.150601360130752E-11 4.674E-13
  Orbit Determination Parameters
   # obs. used (total)      280  
   data-arc span      41705 days (114.18 yr)  
   first obs. used      1867-01-27  
   last obs. used      1981-04-04  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB-CPV405-01  
   fit RMS      1.0726  
   data source      ORB  
   producer      M.S.W. Keesey  
   solution date      2001-Apr-05 11:44:37  

Additional Information
 Earth MOID = .590285 AU 
 T_jup = 1.890 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 8. mag n/a MPC data tape  
comet total magnitude slope K1 15   n/a MPC data tape  
comet nuclear magnitude M2 13. mag n/a MPC data tape  
comet nuclear magnitude slope K2 10   n/a MPC data tape  

38P/Stephan-Oterma          Discovered 1867-Jan-22 by Coggia, Jerome E. at Marseilles Observatory, France
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1980.9   38P/1980 L2   1980 X   1980g 
 1943.2   38P/1942 V1   1942 IX   
 1867.8   38P/1867 B1   1867 I   
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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