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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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9898878208777039 2.2183e-05  
a 98.03435675076732 0.21506 au
q .9913409756028386 2.875e-07 au
i 73.25137867780242 0.00023967 deg
node 49.10245750540501 1.2707e-05 deg
peri 192.8506889407098 0.00017924 deg
M 359.9916183638424 2.7722e-05 deg
tp 2445475.754526875677
(1983-May-21.25452688)
0.00016548 TDB
period 354540.5239946125
970.68
1166.7
3.194
d
yr
n .001015398736211803 3.3413e-06 deg/d
Q 195.0773725259318 0.42795 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      4  
   norm. resid. RMS      .77369  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:29:29  

Additional Information
 Earth MOID = .00583558 au 
 Jupiter MOID = 3.08376 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 12:03 < 00:01 Earth 0.0311654146846596 0.0311646538413526 0.0311661755279702 43.7577381073967 43.7557842436341 2445466.002064933 0.0121810573881154 37.9428560925381 6.82885094403935 0.970700332242584 117753.795667305 T 15 CATAB v2.0g-lin.ifort 2021-Apr-15 23:29:30 2021-Apr-15 23:29

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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