| Parameter |
Value |
| Designation |
407P/PANSTARRS-Fuls |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2020-01-31T19:46:09.442560Z |
| Orbit solution date (soln_date, UTC) |
2022-12-31T16:14:11Z |
| Obs used |
734 |
| NEO |
- |
| M1 |
7.200 |
| K1 |
29.250 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2019-12-21T12:46:27.264000Z |
| Discovery magnitude (MPC) |
18.80 G |
| Discovery observatory (MPC) |
G96 · University of Arizona Mt. Lemmon Survey |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2019-10-22.0000000 |
| e |
0.38496514 |
| q (au) |
2.124832 |
| a (au) |
3.454816 |
| i (deg) |
4.896248 |
| Ω (om, deg) |
80.835926 |
| ω (w, deg) |
92.339614 |
| M (ma, deg) |
344.371557 |
Magnitude
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) |
| 2026-09-25 00:00 |
12:44:46.24 |
-01:28:39.2 |
HIP 62166 |
5.30 |
| 2026-09-25 12:00 |
12:45:45.79 |
-01:35:16.4 |
HIP 62166 |
20.98 |
| 2026-09-26 00:00 |
12:46:45.35 |
-01:41:53.1 |
HIP 62380 |
23.68 |
| 2026-09-26 12:00 |
12:47:44.90 |
-01:48:29.5 |
HIP 62380 |
19.56 |
| 2026-09-27 00:00 |
12:48:44.45 |
-01:55:05.4 |
HIP 62549 |
25.05 |
| 2026-09-27 12:00 |
12:49:44.01 |
-02:01:40.9 |
HIP 62602 |
15.68 |
| 2026-09-28 00:00 |
12:50:43.56 |
-02:08:16.0 |
HIP 62602 |
17.81 |
| 2026-09-28 12:00 |
12:51:43.12 |
-02:14:50.6 |
HIP 62602 |
30.29 |
| 2026-09-29 00:00 |
12:52:42.67 |
-02:21:24.7 |
HIP 62733 |
38.82 |
| 2026-09-29 12:00 |
12:53:42.23 |
-02:27:58.4 |
HIP 62733 |
44.39 |
| 2026-09-30 00:00 |
12:54:41.79 |
-02:34:31.6 |
HIP 63098 |
53.39 |
| 2026-09-30 12:00 |
12:55:41.35 |
-02:41:04.4 |
HIP 63328 |
46.50 |
| 2026-10-01 00:00 |
12:56:40.91 |
-02:47:36.6 |
HIP 63328 |
30.45 |
| 2026-10-01 12:00 |
12:57:40.48 |
-02:54:08.4 |
HIP 63328 |
14.85 |
| 2026-10-02 00:00 |
12:58:40.04 |
-03:00:39.6 |
HIP 63328 |
6.44 |
| 2026-10-02 12:00 |
12:59:39.61 |
-03:07:10.3 |
HIP 63328 |
19.74 |
| 2026-10-03 00:00 |
13:00:39.19 |
-03:13:40.5 |
HIP 63494 |
8.48 |
| 2026-10-03 12:00 |
13:01:38.76 |
-03:20:10.2 |
HIP 63494 |
15.79 |
| 2026-10-04 00:00 |
13:02:38.34 |
-03:26:39.3 |
HIP 63746 |
23.07 |
| 2026-10-04 12:00 |
13:03:37.91 |
-03:33:07.8 |
HIP 63750 |
7.83 |
| 2026-10-05 00:00 |
13:04:37.50 |
-03:39:35.8 |
HIP 63750 |
10.74 |
| 2026-10-05 12:00 |
13:05:37.08 |
-03:46:03.3 |
HIP 63750 |
26.36 |
| 2026-10-06 00:00 |
13:06:36.67 |
-03:52:30.1 |
HIP 63938 |
26.76 |
| 2026-10-06 12:00 |
13:07:36.25 |
-03:58:56.4 |
HIP 64043 |
26.47 |
| 2026-10-07 00:00 |
13:08:35.84 |
-04:05:22.0 |
HIP 64043 |
25.68 |
| 2026-10-07 12:00 |
13:09:35.44 |
-04:11:47.0 |
HIP 64321 |
23.57 |
| 2026-10-08 00:00 |
13:10:35.03 |
-04:18:11.4 |
HIP 64321 |
7.56 |
| 2026-10-08 12:00 |
13:11:34.63 |
-04:24:35.2 |
HIP 64321 |
9.07 |
| 2026-10-09 00:00 |
13:12:34.22 |
-04:30:58.4 |
HIP 64535 |
18.48 |
| 2026-10-09 12:00 |
13:13:33.82 |
-04:37:20.8 |
HIP 64535 |
14.81 |
| 2026-10-10 00:00 |
13:14:33.42 |
-04:43:42.6 |
HIP 64595 |
18.05 |
| 2026-10-10 12:00 |
13:15:33.02 |
-04:50:03.8 |
HIP 64595 |
20.57 |
| 2026-10-11 00:00 |
13:16:32.62 |
-04:56:24.2 |
HIP 64811 |
14.61 |
| 2026-10-11 12:00 |
13:17:32.23 |
-05:02:44.0 |
HIP 64811 |
20.77 |
| 2026-10-12 00:00 |
13:18:31.83 |
-05:09:03.1 |
HIP 64811 |
34.20 |
| 2026-10-12 12:00 |
13:19:31.43 |
-05:15:21.4 |
HIP 65148 |
33.11 |
| 2026-10-13 00:00 |
13:20:31.03 |
-05:21:39.0 |
HIP 65148 |
19.71 |
| 2026-10-13 12:00 |
13:21:30.64 |
-05:27:55.9 |
HIP 65148 |
14.14 |
| 2026-10-14 00:00 |
13:22:30.24 |
-05:34:12.0 |
HIP 65148 |
23.03 |
| 2026-10-14 12:00 |
13:23:29.84 |
-05:40:27.4 |
HIP 65379 |
32.22 |
| 2026-10-15 00:00 |
13:24:29.44 |
-05:46:42.1 |
HIP 65420 |
36.88 |
| 2026-10-15 12:00 |
13:25:29.04 |
-05:52:55.9 |
HIP 65590 |
21.21 |
| 2026-10-16 00:00 |
13:26:28.64 |
-05:59:09.0 |
HIP 65590 |
7.02 |