| Parameter |
Value |
| Designation |
454P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2022-07-25T10:55:32.796480Z |
| Orbit solution date (soln_date, UTC) |
2023-02-13T23:14:25Z |
| Obs used |
96 |
| NEO |
- |
| M1 |
13.600 |
| K1 |
12.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2013-11-27T13:53:06.720000Z |
| Discovery magnitude (MPC) |
21.40 r |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2021-08-02.0000000 |
| e |
0.36154433 |
| q (au) |
2.686682 |
| a (au) |
4.208095 |
| i (deg) |
19.806089 |
| Ω (om, deg) |
54.608515 |
| ω (w, deg) |
19.834027 |
| M (ma, deg) |
319.187103 |
Magnitude
Scatter + Global Linear
$$
M_a = (13.082 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
13.082 |
| n |
6.000 |
| gf |
0.982 |
| gb |
-0.500 |
| k |
0.800 |
| δ90 |
6.502 |
| 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) |
| 2026-03-26 00:00 |
16:30:38.09 |
-24:12:17.5 |
HIP 80736 |
30.12 |
| 2026-03-26 12:00 |
16:30:34.81 |
-24:13:02.8 |
HIP 80736 |
29.06 |
| 2026-03-27 00:00 |
16:30:31.32 |
-24:13:47.8 |
HIP 80736 |
27.96 |
| 2026-03-27 12:00 |
16:30:27.64 |
-24:14:32.4 |
HIP 80736 |
26.84 |
| 2026-03-28 00:00 |
16:30:23.75 |
-24:15:16.6 |
HIP 80736 |
25.69 |
| 2026-03-28 12:00 |
16:30:19.66 |
-24:16:00.6 |
HIP 80736 |
24.51 |
| 2026-03-29 00:00 |
16:30:15.37 |
-24:16:44.2 |
HIP 80736 |
23.29 |
| 2026-03-29 12:00 |
16:30:10.88 |
-24:17:27.4 |
HIP 80736 |
22.05 |
| 2026-03-30 00:00 |
16:30:06.19 |
-24:18:10.3 |
HIP 80736 |
20.78 |
| 2026-03-30 12:00 |
16:30:01.30 |
-24:18:52.8 |
HIP 80736 |
19.48 |
| 2026-03-31 00:00 |
16:29:56.21 |
-24:19:35.0 |
HIP 80736 |
18.16 |
| 2026-03-31 12:00 |
16:29:50.92 |
-24:20:16.8 |
HIP 80736 |
16.81 |
| 2026-04-01 00:00 |
16:29:45.42 |
-24:20:58.3 |
HIP 80736 |
15.45 |
| 2026-04-01 12:00 |
16:29:39.73 |
-24:21:39.4 |
HIP 80736 |
14.07 |
| 2026-04-02 00:00 |
16:29:33.85 |
-24:22:20.1 |
HIP 80736 |
12.69 |
| 2026-04-02 12:00 |
16:29:27.76 |
-24:23:00.5 |
HIP 80736 |
11.32 |
| 2026-04-03 00:00 |
16:29:21.47 |
-24:23:40.5 |
HIP 80736 |
9.98 |
| 2026-04-03 12:00 |
16:29:14.99 |
-24:24:20.1 |
HIP 80736 |
8.71 |
| 2026-04-04 00:00 |
16:29:08.31 |
-24:24:59.3 |
HIP 80736 |
7.56 |
| 2026-04-04 12:00 |
16:29:01.43 |
-24:25:38.2 |
HIP 80736 |
6.64 |
| 2026-04-05 00:00 |
16:28:54.35 |
-24:26:16.7 |
HIP 80736 |
6.07 |
| 2026-04-05 12:00 |
16:28:47.08 |
-24:26:54.8 |
HIP 80736 |
5.99 |
| 2026-04-06 00:00 |
16:28:39.62 |
-24:27:32.5 |
HIP 80736 |
6.46 |
| 2026-04-06 12:00 |
16:28:31.95 |
-24:28:09.8 |
HIP 80736 |
7.40 |
| 2026-04-07 00:00 |
16:28:24.10 |
-24:28:46.8 |
HIP 80736 |
8.68 |
| 2026-04-07 12:00 |
16:28:16.04 |
-24:29:23.3 |
HIP 80736 |
10.19 |
| 2026-04-08 00:00 |
16:28:07.80 |
-24:29:59.5 |
HIP 80736 |
11.87 |
| 2026-04-08 12:00 |
16:27:59.36 |
-24:30:35.2 |
HIP 80736 |
13.68 |
| 2026-04-09 00:00 |
16:27:50.73 |
-24:31:10.5 |
HIP 80736 |
15.58 |
| 2026-04-09 12:00 |
16:27:41.91 |
-24:31:45.5 |
HIP 80685 |
16.50 |
| 2026-04-10 00:00 |
16:27:32.89 |
-24:32:20.0 |
HIP 80685 |
17.37 |
| 2026-04-10 12:00 |
16:27:23.69 |
-24:32:54.1 |
HIP 80685 |
18.49 |
| 2026-04-11 00:00 |
16:27:14.30 |
-24:33:27.8 |
HIP 80685 |
19.82 |
| 2026-04-11 12:00 |
16:27:04.72 |
-24:34:01.1 |
HIP 80685 |
21.33 |
| 2026-04-12 00:00 |
16:26:54.95 |
-24:34:33.9 |
HIP 80462 |
21.65 |
| 2026-04-12 12:00 |
16:26:44.99 |
-24:35:06.4 |
HIP 80462 |
19.70 |
| 2026-04-13 00:00 |
16:26:34.85 |
-24:35:38.4 |
HIP 80462 |
17.79 |
| 2026-04-13 12:00 |
16:26:24.52 |
-24:36:10.0 |
HIP 80462 |
15.97 |
| 2026-04-14 00:00 |
16:26:14.01 |
-24:36:41.1 |
HIP 80462 |
14.29 |
| 2026-04-14 12:00 |
16:26:03.32 |
-24:37:11.8 |
HIP 80462 |
12.82 |
| 2026-04-15 00:00 |
16:25:52.44 |
-24:37:42.1 |
HIP 80462 |
11.67 |
| 2026-04-15 12:00 |
16:25:41.38 |
-24:38:11.9 |
HIP 80462 |
10.97 |
| 2026-04-16 00:00 |
16:25:30.15 |
-24:38:41.3 |
HIP 80462 |
10.83 |