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v. 3.17.1
C/1999 J4
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Type
Comet
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 18:48
Orbital Elements
MPC Comet
Epoch of elements (MJD)
51318.0
May 20, 1999
Orbital inclination in deg
118.9091552847187
Longitude of Ascending Node (deg)
264.479747594831
Arg of perihelion (deg)
95.11615280465972
Eccentricity
0.9997132168774958
Perihelion distance (AU)
3.7810737
Epoch of perihelion
Nov. 17, 1999, 10:01 a.m.
Epoch of perihelion (MJD)
51499.41791
Total Magnitude (M1)
8.5
Slope Parameter (k1)
25.0
Physical Parameters
Follow-up Details
Number of observations
40
Arc length (days)
27.00
Spectroscopy Details
Known Taxonomies
None
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