P/2024 OC2 (PANSTARRS)

Metadata

Parameter Value
Designation P/2024 OC2 (PANSTARRS)
Type P
Perihelion (tp_cal, UTC) 2024-10-09T07:52:40.143360Z
Orbit solution date (soln_date, UTC) 2025-01-14T17:42:19Z
Obs used 43
NEO Yes
M1 20.700
K1 14.750
PC -
Osculating Elements
Parameter Value
Epoch (epoch_cal, TDB) 2024-08-20.0000000
e 0.77423172
q (au) 0.592825
a (au) 2.625811
i (deg) 7.671223
Ω (om, deg) 136.619189
ω (w, deg) 258.539659
M (ma, deg) 348.342092

Magnitude

P/2024 OC2 (PANSTARRS) · Magnitude (Full range)

Scatter + Global Linear

$$ M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$

Model Parameters

Parameter Value
H0 -
n -
gf -
gb -
k -
δ90 -
Parameter Symbol Range Description
Absolute magnitude at 1 AU from Sun and Earth H0 -5 to 20 Intrinsic brightness of the comet
Photometric slope parameter n 2 to 6 Rate of brightness change with heliocentric distance
Forward scattering asymmetry factor gf 0.8 to 1 Degree of forward scattering
Backward scattering asymmetry factor gb -1 to -0.5 Degree of backward scattering
Partitioning coefficient k 0.8 to 1 Ratio between forward/backward scattering contributions
Dust-to-gas brightness ratio δ90 1 to 10 Relative contribution of dust scattering to gas emission

Reference: EPSC-DPS2025-160

Ephemeris

Date/Time (UTC) RA (J2000) Dec (J2000) Nearest HIP Dist from HIP (arcmin)
2026-06-01 00:00 13:11:30.60 +01:34:08.8 HIP 64311 13.43
2026-06-01 12:00 13:11:19.84 +01:34:24.1 HIP 64311 11.45
2026-06-02 00:00 13:11:09.30 +01:34:37.9 HIP 64311 9.88
2026-06-02 12:00 13:10:58.99 +01:34:50.1 HIP 64311 8.87
2026-06-03 00:00 13:10:48.90 +01:35:00.8 HIP 64311 8.58
2026-06-03 12:00 13:10:39.04 +01:35:10.0 HIP 64311 9.01
2026-06-04 00:00 13:10:29.40 +01:35:17.7 HIP 64311 10.04
2026-06-04 12:00 13:10:19.99 +01:35:23.8 HIP 64311 11.46
2026-06-05 00:00 13:10:10.80 +01:35:28.4 HIP 64311 13.13
2026-06-05 12:00 13:10:01.84 +01:35:31.5 HIP 64311 14.93
2026-06-06 00:00 13:09:53.10 +01:35:33.2 HIP 64311 16.80
2026-06-06 12:00 13:09:44.59 +01:35:33.3 HIP 64311 18.70
2026-06-07 00:00 13:09:36.31 +01:35:31.9 HIP 64311 20.60
2026-06-07 12:00 13:09:28.24 +01:35:29.1 HIP 64311 22.49
2026-06-08 00:00 13:09:20.41 +01:35:24.8 HIP 64311 24.35
2026-06-08 12:00 13:09:12.80 +01:35:19.0 HIP 64082 24.33
2026-06-09 00:00 13:09:05.41 +01:35:11.7 HIP 64082 22.83
2026-06-09 12:00 13:08:58.25 +01:35:03.0 HIP 64082 21.40
2026-06-10 00:00 13:08:51.31 +01:34:52.8 HIP 64051 19.74
2026-06-10 12:00 13:08:44.60 +01:34:41.2 HIP 64051 18.10
2026-06-11 00:00 13:08:38.11 +01:34:28.2 HIP 64051 16.50
2026-06-11 12:00 13:08:31.84 +01:34:13.7 HIP 64051 14.96
2026-06-12 00:00 13:08:25.81 +01:33:57.8 HIP 64051 13.47
2026-06-12 12:00 13:08:19.99 +01:33:40.4 HIP 64051 12.03
2026-06-13 00:00 13:08:14.40 +01:33:21.7 HIP 64051 10.64
2026-06-13 12:00 13:08:09.03 +01:33:01.5 HIP 64051 9.30
2026-06-14 00:00 13:08:03.88 +01:32:40.0 HIP 64051 8.01
2026-06-14 12:00 13:07:58.96 +01:32:17.0 HIP 64051 6.77
2026-06-15 00:00 13:07:54.26 +01:31:52.7 HIP 64051 5.58
2026-06-15 12:00 13:07:49.79 +01:31:27.0 HIP 64051 4.44
2026-06-16 00:00 13:07:45.53 +01:31:00.0 HIP 64051 3.37
2026-06-16 12:00 13:07:41.50 +01:30:31.5 HIP 64051 2.39
2026-06-17 00:00 13:07:37.68 +01:30:01.8 HIP 64051 1.58
2026-06-17 12:00 13:07:34.09 +01:29:30.7 HIP 64051 1.21
2026-06-18 00:00 13:07:30.71 +01:28:58.2 HIP 64051 1.55
2026-06-18 12:00 13:07:27.56 +01:28:24.5 HIP 64051 2.26
2026-06-19 00:00 13:07:24.62 +01:27:49.4 HIP 64051 3.06
2026-06-19 12:00 13:07:21.90 +01:27:13.1 HIP 64051 3.88
2026-06-20 00:00 13:07:19.40 +01:26:35.4 HIP 64051 4.69
2026-06-20 12:00 13:07:17.11 +01:25:56.5 HIP 64051 5.49
2026-06-21 00:00 13:07:15.04 +01:25:16.3 HIP 64051 6.26
2026-06-21 12:00 13:07:13.18 +01:24:34.9 HIP 64051 7.03
2026-06-22 00:00 13:07:11.54 +01:23:52.2 HIP 64051 7.77