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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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (AU) Minimum Distance (AU) Maximum Distance (AU) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1903-Jan-17 05:37 00:07 Jupiter 1.66106522809757 1.66105878539297 1.66107167158132 10.3809796110778 10.3317415303616 2416131.73443 7.23019664669031 838.60150736207 51.1521901590376 88.6143936706015 834072.719677968 T 10 CATAB v2.0a-linF95 2006-Mar-28 13:00:38 2006-Mar-28 13:00
1982-Mar-26 15:28 00:01 Jupiter 1.94858812964431 1.9485430649558 1.9486331942368 16.6959477345634 16.669892028348 2445055.14472 1.61616859979237 875.493879744464 89.6226383233205 -26.2671986160298 396734.138610247 T 10 CATAB v2.0a-linF95 2006-Mar-28 13:00:38 2006-Mar-28 13:00
1984-Jun-01 09:18 00:05 Saturn 1.42418787355813 1.42414974817133 1.42422600557335 9.44079639064555 9.42191483917339 2445852.88759 5.89010447054193 1499.3530048073 116.79079676985 -63.5193348510169 420445.768591429 T 10 CATAB v2.0a-linF95 2006-Mar-28 13:00:38 2006-Mar-28 13:00
2067-May-14 09:30 01:35 Uranus 1.58665397413059 1.58608371094699 1.58722423889519 5.39643397230864 5.39190825643477 2476149.89647 95.1579597073671 8264.15336982521 181.709499655983 -21.7073039905884 119042.370490839 T 10 CATAB v2.0a-linF95 2006-Mar-28 13:00:38 2006-Mar-28 13:00
2135-Oct-21 01:00 00:18 Jupiter 1.46180214517698 1.46175922876737 1.46184508439562 11.8894271390272 11.8405913408906 2501145.54198 18.0390962781969 2202.80757234529 236.880023276347 -80.948153268594 178533.482717691 T 10 CATAB v2.0a-linF95 2006-Mar-28 13:00:38 2006-Mar-28 13:00

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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