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C/1983 H1 (IRAS-Araki-Alcock)
Classification: Comet          SPK-ID: 1000304
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2445466.5 (1983-May-12.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9898702562860567 9.8584e-06  
a 97.8642595251924 0.095246 AU
q .9913398677450297 1.3926e-07 AU
i 73.25259957466264 0.00010779 deg
node 49.10246667885038 5.9168e-06 deg
peri 192.8513738180423 8.3e-05 deg
M 359.990577919114 1.3818e-05 deg
tp 2445475.755053337452
(1983-May-21.25505334)
7.5221e-05 JED
period 353618.1913319791
968.15
516.23
1.413
d
yr
n .001018047172980503 1.4862e-06 deg/d
Q 194.7371791826397 0.18953 AU
  Orbit Determination Parameters
   # obs. used (total)      278  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      160 days  
   first obs. used      1983-04-27  
   last obs. used      1983-10-04  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      3  
   fit RMS      1.3755  
   data source      ORB  
   producer      Otto Matic  
   solution date      2011-Sep-14 21:14:14  

Additional Information
 Earth MOID = .00583133 AU 
 T_jup = 0.408 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
diameter diameter 9.2 km 1. Earth, Moon, and Planets, v. 89, Issue 1, p. 117-134 (2002)  
geometric albedo albedo 0.02   0.01 Earth, Moon, and Planets, v. 89, Issue 1, p. 117-134 (2002)  

[ 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
1983-May-11 12:02 < 00:01 Earth 0.0311654561477189 0.0311651035267123 0.0311658087688785 43.7575889702493 43.7556351024393 2445466.002061320 0.00168043899490792 17.814086346333 2.65562648914663 -0.443977173064831 253589.58772197 T 12 CATAB v2.0c-linF95 2011-Sep-15 11:36:04 2011-Sep-15 13:08

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1983.4   C/1983 H1   1983 VII   1983d 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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