Schedule Observations Schedule Spectroscopic Observations
NameP11bX5O → C/2021 A9
Type Comet (Hyperbolic) [Dynamically New]
Status Actively Following
Characterization Target
Source LOOK Project
Check Spectroscopic Feasibility Create LC Plot
Recent Blocks Scheduled
Measurements
Show Measurements
Plot Visibility
Last Update: 2025-Apr-28 07:14
Orbital Elements
MPC Comet
Epoch of elements (MJD)
60800.0 May 5, 2025
Orbital inclination in deg 158.01782
Longitude of Ascending Node (deg) 314.852
Arg of perihelion (deg) 211.62507
Eccentricity 1.0002827
Perihelion distance (AU) 7.7633094
Epoch of perihelion Dec. 3, 2023, 8:58 p.m.
Epoch of perihelion (MJD) 60281.87425
Total Magnitude (M1) 6.6
Slope Parameter (k1) 9.25
Physical Parameters
K1 autocmod 3.0f

54
9.25
M1 from 375 observations, assumed slope, autocmod 3.0f

54
6.6 +/- 0.7
Reciprocal of semimajor axis E2025-DP4
0.000021 au +/- 0.0000006
+/- 0.0000006
Diameter Initial Diameter Guess using H=11.1 and albedo=0.14 (0.01 to 0.5)

MPC Default
21402.33 m +58678.0 / -10077.0
Follow-up Details
NEOCP digest2 score 35
Number of observations 466
Arc length (days) 1536.00
Time since last observation (days) 3.84
Spectroscopy Details
Known Taxonomies None