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v. 3.17.1
C/1917 H1
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Type
Comet (Hyperbolic)
Status
Not Following
Source
NEODSYS
UTC date
------------ Any 1.0m ------------
LSC 1.0m - W85-87; (CTIO, Chile)
ELP 1.0m - V37,V39; (McDonald, Texas)
COJ 1.0m - Q63-64; (Siding Spring, Aust.)
CPT 1.0m - K91-93; (Sutherland, S. Africa)
TFN 1.0m - Z31,Z24; (Tenerife, Spain)
------------ Any 0.4m ------------
LSC 0.4m - W89,W79; (CTIO, Chile)
ELP 0.4m - V38,V45,V47; (McDonald, Texas)
OGG 0.4m - T03-04; (Maui, Hawaii)
COJ 0.4m - Q58-59; (Siding Spring, Aust.)
CPT 0.4m - L09; (Sutherland, S. Africa)
TFN 0.4m - Z17,Z21; (Tenerife, Spain)
------------ Any 2.0m ------------
FTS 2.0m - E10; (Siding Spring, Aust.) [MuSCAT4]
FTN 2.0m - F65; (Maui, Hawaii ) [MuSCAT3]
------------ Non LCO ------------
Mt John 1.8m - 474 (Mt John, NZ)
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Last Update: 2026-May-22 15:43
Orbital Elements
MPC Comet
Epoch of elements (MJD)
21373.0
May 25, 1917
Orbital inclination in deg
158.7392670349381
Longitude of Ascending Node (deg)
10.82961778574444
Arg of perihelion (deg)
119.1480654730817
Eccentricity
1.000064710793971
Perihelion distance (AU)
0.7641699
Epoch of perihelion
May 18, 1917, 4:57 p.m.
Epoch of perihelion (MJD)
21366.70684
Total Magnitude (M1)
12.0
Slope Parameter (k1)
78.125
Physical Parameters
Follow-up Details
Number of observations
45
Arc length (days)
56.00
Spectroscopy Details
Known Taxonomies
None
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