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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 2445467.5 (1983-May-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9898865367679596 2.22e-05  
a 98.02190892597082 0.21517 au
q .9913409718572217 2.876e-07 au
i 73.25136691611139 0.00023981 deg
node 49.10245801551902 1.2713e-05 deg
peri 192.8506953628331 0.00017935 deg
M 359.9916167596202 2.7745e-05 deg
tp 2445475.754534351774
(1983-May-21.25453435)
0.00016559 TDB
period 354472.9999391151
970.49
1167.2
3.196
d
yr
n .001015592160931395 3.344e-06 deg/d
Q 195.0524768800844 0.42817 au
  Orbit Determination Parameters
   # obs. used (total)      347  
   # 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      4  
   norm. resid. RMS      .77088  
   source      ORB  
   producer      Giorgini  
   solution date      2017-Jul-28 17:06:35  

Additional Information
 Earth MOID = .00583558 au 
 Jupiter MOID = 3.08375 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
absolute magnitude H 12.599   .44883 14 autocmod 2.6k
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 12:03 < 00:01 Earth 0.0311654048709974 0.0311646436989499 0.0311661660430467 43.7577221416162 43.7557682765257 2445466.002064776 0.00406648583360302 37.9592667856537 6.86110486693972 0.972339392699476 117700.750665174 T 14 CATAB v2.0e-lin.ifort 2017-Nov-30 18:54:43 2017-Nov-30 18:54

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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