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v. 3.17.1a
218P
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Name
C18ZM45 → 218P
Type
Comet
Status
Not Following
Source
Minor Planet Center
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; (McDonald, Texas)
ELP 0.4m - V98; (TEMP; McDonald, Texas)
ELP 0.4m - V99; (TEMP; 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)
Site
Min Altitude
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Measurements
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Ingest Time: 2025-Dec-22 19:57
Orbital Elements
MPC Comet
Epoch of elements (MJD)
61081.0
Feb. 10, 2026
Orbital inclination in deg
2.77594
Longitude of Ascending Node (deg)
171.56146
Arg of perihelion (deg)
85.72535
Eccentricity
0.3700034
Perihelion distance (AU)
0.9462855
Epoch of perihelion
March 24, 2026, 5:38 a.m.
Epoch of perihelion (MJD)
61123.23479
Total Magnitude (M1)
16.4
Slope Parameter (k1)
10.0
Physical Parameters
Diameter
Initial Diameter Guess using H=16.4 and albedo=0.14 (0.01 to 0.5)
MPC Default
1864.06 m
+5111.0 / -878.0
Follow-up Details
NEOCP
digest2
score
100
Number of observations
25
Arc length (days)
26.02
Time since last observation (days)
0.60
Spectroscopy Details
Known Taxonomies
None
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