| Parameter |
Value |
| Designation |
C/2024 O1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2023-01-29T05:12:09.480960Z |
| Orbit solution date (soln_date, UTC) |
2024-08-11T00:12:19Z |
| Obs used |
37 |
| NEO |
- |
| M1 |
13.300 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-07-28T09:31:08.832000Z |
| Discovery magnitude (MPC) |
21.04 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2024-03-10.0000000 |
| e |
1.00181627 |
| q (au) |
6.608493 |
| a (au) |
-3638.502297 |
| i (deg) |
59.066490 |
| Ω (om, deg) |
303.331127 |
| ω (w, deg) |
349.939425 |
| M (ma, deg) |
0.001822 |
Magnitude
Scatter + Global Linear
$$
M_a = (18.575 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
18.575 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.890 |
| k |
0.800 |
| δ90 |
10.000 |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
22:12:33.55 |
+42:31:31.4 |
HIP 109738 |
13.66 |
| 2026-06-01 12:00 |
22:12:33.43 |
+42:34:33.3 |
HIP 109738 |
14.81 |
| 2026-06-02 00:00 |
22:12:33.20 |
+42:37:34.8 |
HIP 109738 |
16.46 |
| 2026-06-02 12:00 |
22:12:32.84 |
+42:40:35.9 |
HIP 109738 |
18.47 |
| 2026-06-03 00:00 |
22:12:32.37 |
+42:43:36.7 |
HIP 109481 |
19.79 |
| 2026-06-03 12:00 |
22:12:31.77 |
+42:46:37.0 |
HIP 109481 |
19.81 |
| 2026-06-04 00:00 |
22:12:31.05 |
+42:49:36.9 |
HIP 109511 |
20.13 |
| 2026-06-04 12:00 |
22:12:30.22 |
+42:52:36.3 |
HIP 109511 |
18.32 |
| 2026-06-05 00:00 |
22:12:29.26 |
+42:55:35.4 |
HIP 109511 |
16.85 |
| 2026-06-05 12:00 |
22:12:28.18 |
+42:58:34.0 |
HIP 109511 |
15.78 |
| 2026-06-06 00:00 |
22:12:26.99 |
+43:01:32.1 |
HIP 109511 |
15.22 |
| 2026-06-06 12:00 |
22:12:25.67 |
+43:04:29.8 |
HIP 109511 |
15.20 |
| 2026-06-07 00:00 |
22:12:24.23 |
+43:07:27.0 |
HIP 109511 |
15.73 |
| 2026-06-07 12:00 |
22:12:22.66 |
+43:10:23.7 |
HIP 109711 |
16.30 |
| 2026-06-08 00:00 |
22:12:20.98 |
+43:13:19.9 |
HIP 109711 |
14.49 |
| 2026-06-08 12:00 |
22:12:19.17 |
+43:16:15.6 |
HIP 109711 |
13.14 |
| 2026-06-09 00:00 |
22:12:17.24 |
+43:19:10.9 |
HIP 109711 |
12.37 |
| 2026-06-09 12:00 |
22:12:15.19 |
+43:22:05.6 |
HIP 109711 |
12.30 |
| 2026-06-10 00:00 |
22:12:13.02 |
+43:24:59.8 |
HIP 109711 |
12.94 |
| 2026-06-10 12:00 |
22:12:10.72 |
+43:27:53.4 |
HIP 109522 |
11.70 |
| 2026-06-11 00:00 |
22:12:08.30 |
+43:30:46.5 |
HIP 109522 |
10.67 |
| 2026-06-11 12:00 |
22:12:05.76 |
+43:33:39.0 |
HIP 109522 |
10.36 |
| 2026-06-12 00:00 |
22:12:03.10 |
+43:36:31.0 |
HIP 109522 |
10.83 |
| 2026-06-12 12:00 |
22:12:00.31 |
+43:39:22.4 |
HIP 109522 |
11.99 |
| 2026-06-13 00:00 |
22:11:57.40 |
+43:42:13.2 |
HIP 109522 |
13.65 |
| 2026-06-13 12:00 |
22:11:54.37 |
+43:45:03.4 |
HIP 109522 |
15.65 |
| 2026-06-14 00:00 |
22:11:51.21 |
+43:47:53.0 |
HIP 109522 |
17.88 |
| 2026-06-14 12:00 |
22:11:47.93 |
+43:50:41.9 |
HIP 109522 |
20.26 |
| 2026-06-15 00:00 |
22:11:44.53 |
+43:53:30.3 |
HIP 109522 |
22.74 |
| 2026-06-15 12:00 |
22:11:41.00 |
+43:56:18.0 |
HIP 109417 |
22.72 |
| 2026-06-16 00:00 |
22:11:37.36 |
+43:59:05.0 |
HIP 109417 |
20.49 |
| 2026-06-16 12:00 |
22:11:33.59 |
+44:01:51.4 |
HIP 109417 |
18.43 |
| 2026-06-17 00:00 |
22:11:29.69 |
+44:04:37.2 |
HIP 109417 |
16.60 |
| 2026-06-17 12:00 |
22:11:25.68 |
+44:07:22.2 |
HIP 109417 |
15.06 |
| 2026-06-18 00:00 |
22:11:21.54 |
+44:10:06.6 |
HIP 109417 |
13.92 |
| 2026-06-18 12:00 |
22:11:17.28 |
+44:12:50.2 |
HIP 109417 |
13.28 |
| 2026-06-19 00:00 |
22:11:12.90 |
+44:15:33.2 |
HIP 109417 |
13.20 |
| 2026-06-19 12:00 |
22:11:08.39 |
+44:18:15.4 |
HIP 109417 |
13.69 |
| 2026-06-20 00:00 |
22:11:03.77 |
+44:20:56.9 |
HIP 109417 |
14.69 |
| 2026-06-20 12:00 |
22:10:59.02 |
+44:23:37.7 |
HIP 109417 |
16.11 |
| 2026-06-21 00:00 |
22:10:54.16 |
+44:26:17.7 |
HIP 109417 |
17.84 |
| 2026-06-21 12:00 |
22:10:49.17 |
+44:28:57.0 |
HIP 109417 |
19.79 |
| 2026-06-22 00:00 |
22:10:44.07 |
+44:31:35.5 |
HIP 109417 |
21.92 |