| Parameter |
Value |
| Designation |
P/2023 B3 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2020-09-02T19:46:49.169280Z |
| Orbit solution date (soln_date, UTC) |
2023-03-20T19:43:10Z |
| Obs used |
82 |
| NEO |
- |
| M1 |
14.700 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2023-01-23T10:13:08.774400Z |
| Discovery magnitude (MPC) |
21.14 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2022-12-21.0000000 |
| e |
0.12329891 |
| q (au) |
3.982887 |
| a (au) |
4.543039 |
| i (deg) |
9.163475 |
| Ω (om, deg) |
154.004785 |
| ω (w, deg) |
239.769487 |
| M (ma, deg) |
85.415628 |
Magnitude
Scatter + Global Linear
$$
M_a = (14.589 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
14.589 |
| n |
2.000 |
| gf |
0.840 |
| gb |
-0.934 |
| k |
1.000 |
| δ90 |
1.000 |
| 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) |
| 2026-07-29 00:00 |
15:36:01.24 |
-09:04:05.7 |
HIP 76517 |
23.93 |
| 2026-07-29 12:00 |
15:36:03.08 |
-09:05:11.5 |
HIP 76517 |
23.56 |
| 2026-07-30 00:00 |
15:36:05.11 |
-09:06:17.9 |
HIP 76517 |
23.21 |
| 2026-07-30 12:00 |
15:36:07.33 |
-09:07:25.0 |
HIP 76517 |
22.87 |
| 2026-07-31 00:00 |
15:36:09.73 |
-09:08:32.8 |
HIP 76517 |
22.56 |
| 2026-07-31 12:00 |
15:36:12.33 |
-09:09:41.2 |
HIP 76517 |
22.27 |
| 2026-08-01 00:00 |
15:36:15.11 |
-09:10:50.3 |
HIP 76517 |
22.02 |
| 2026-08-01 12:00 |
15:36:18.08 |
-09:12:00.0 |
HIP 76517 |
21.81 |
| 2026-08-02 00:00 |
15:36:21.24 |
-09:13:10.4 |
HIP 76517 |
21.65 |
| 2026-08-02 12:00 |
15:36:24.59 |
-09:14:21.4 |
HIP 76517 |
21.54 |
| 2026-08-03 00:00 |
15:36:28.12 |
-09:15:33.0 |
HIP 76517 |
21.51 |
| 2026-08-03 12:00 |
15:36:31.84 |
-09:16:45.2 |
HIP 76517 |
21.54 |
| 2026-08-04 00:00 |
15:36:35.75 |
-09:17:58.1 |
HIP 76517 |
21.66 |
| 2026-08-04 12:00 |
15:36:39.85 |
-09:19:11.6 |
HIP 76517 |
21.87 |
| 2026-08-05 00:00 |
15:36:44.13 |
-09:20:25.7 |
HIP 76517 |
22.16 |
| 2026-08-05 12:00 |
15:36:48.59 |
-09:21:40.4 |
HIP 76517 |
22.56 |
| 2026-08-06 00:00 |
15:36:53.24 |
-09:22:55.6 |
HIP 76517 |
23.05 |
| 2026-08-06 12:00 |
15:36:58.08 |
-09:24:11.5 |
HIP 76570 |
21.86 |
| 2026-08-07 00:00 |
15:37:03.10 |
-09:25:28.0 |
HIP 76570 |
20.18 |
| 2026-08-07 12:00 |
15:37:08.30 |
-09:26:45.0 |
HIP 76570 |
18.46 |
| 2026-08-08 00:00 |
15:37:13.69 |
-09:28:02.6 |
HIP 76570 |
16.73 |
| 2026-08-08 12:00 |
15:37:19.27 |
-09:29:20.7 |
HIP 76570 |
14.97 |
| 2026-08-09 00:00 |
15:37:25.02 |
-09:30:39.4 |
HIP 76570 |
13.21 |
| 2026-08-09 12:00 |
15:37:30.97 |
-09:31:58.7 |
HIP 76570 |
11.46 |
| 2026-08-10 00:00 |
15:37:37.09 |
-09:33:18.5 |
HIP 76570 |
9.75 |
| 2026-08-10 12:00 |
15:37:43.40 |
-09:34:38.8 |
HIP 76570 |
8.13 |
| 2026-08-11 00:00 |
15:37:49.88 |
-09:35:59.7 |
HIP 76570 |
6.70 |
| 2026-08-11 12:00 |
15:37:56.55 |
-09:37:21.1 |
HIP 76570 |
5.67 |
| 2026-08-12 00:00 |
15:38:03.41 |
-09:38:43.0 |
HIP 76570 |
5.32 |
| 2026-08-12 12:00 |
15:38:10.44 |
-09:40:05.4 |
HIP 76570 |
5.82 |
| 2026-08-13 00:00 |
15:38:17.65 |
-09:41:28.4 |
HIP 76570 |
7.02 |
| 2026-08-13 12:00 |
15:38:25.04 |
-09:42:51.8 |
HIP 76570 |
8.68 |
| 2026-08-14 00:00 |
15:38:32.62 |
-09:44:15.7 |
HIP 76570 |
10.59 |
| 2026-08-14 12:00 |
15:38:40.37 |
-09:45:40.0 |
HIP 76570 |
12.68 |
| 2026-08-15 00:00 |
15:38:48.30 |
-09:47:04.9 |
HIP 76570 |
14.88 |
| 2026-08-15 12:00 |
15:38:56.40 |
-09:48:30.2 |
HIP 76682 |
15.97 |
| 2026-08-16 00:00 |
15:39:04.69 |
-09:49:56.0 |
HIP 76703 |
16.00 |
| 2026-08-16 12:00 |
15:39:13.14 |
-09:51:22.2 |
HIP 76703 |
16.09 |
| 2026-08-17 00:00 |
15:39:21.78 |
-09:52:48.8 |
HIP 76703 |
16.57 |
| 2026-08-17 12:00 |
15:39:30.59 |
-09:54:15.9 |
HIP 76703 |
17.41 |
| 2026-08-18 00:00 |
15:39:39.57 |
-09:55:43.5 |
HIP 76703 |
18.59 |
| 2026-08-18 12:00 |
15:39:48.73 |
-09:57:11.4 |
HIP 76703 |
20.07 |
| 2026-08-19 00:00 |
15:39:58.05 |
-09:58:39.8 |
HIP 76668 |
19.81 |