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v. 3.17.1
ATLAS (C/2025 L1)
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Name
A11otPP → C/2025 L1
Type
Comet (Hyperbolic)
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,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)
Site
Min Altitude
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Recent Blocks Scheduled
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Measurements
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Last Measurement: 2026-Mar-19 02:05
Orbital Elements
MPC Comet
Epoch of elements (MJD)
61000.0
Nov. 21, 2025
Orbital inclination in deg
114.13661
Longitude of Ascending Node (deg)
208.10983
Arg of perihelion (deg)
341.25
Eccentricity
1.0015044
Perihelion distance (AU)
1.6796745
Epoch of perihelion
Jan. 12, 2026, 5:37 p.m.
Epoch of perihelion (MJD)
61052.73436
Total Magnitude (M1)
14.3
Slope Parameter (k1)
4.5
Physical Parameters
Reciprocal of semimajor axis
E2026-FC3
0.000087 au
+/- 0.000003
+/- 0.000003
K1
autocmod 3.0g
14
4.5
M1
2 parameter fit from 116 observations, autocmod 3.0g
14
14.3
+/- 1.0
Diameter
Initial Diameter Guess using H=12.7 and albedo=0.14 (0.01 to 0.5)
MPC Default
10243.8 m
+28085.0 / -4823.0
Absolute Magnitude
MPC Default
12.7
Follow-up Details
NEOCP
digest2
score
35
Number of observations
126
Arc length (days)
534.00
Time since last observation (days)
28.75
Spectroscopy Details
Known Taxonomies
None
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