| 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 · 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) |
| 2026-03-26 00:00 |
07:16:20.58 |
+26:57:56.3 |
HIP 35191 |
10.64 |
| 2026-03-26 12:00 |
07:16:47.03 |
+26:56:56.4 |
HIP 35191 |
13.12 |
| 2026-03-27 00:00 |
07:17:13.88 |
+26:55:55.5 |
HIP 35253 |
14.72 |
| 2026-03-27 12:00 |
07:17:41.12 |
+26:54:53.4 |
HIP 35253 |
15.91 |
| 2026-03-28 00:00 |
07:18:08.74 |
+26:53:50.3 |
HIP 35494 |
18.83 |
| 2026-03-28 12:00 |
07:18:36.76 |
+26:52:46.1 |
HIP 35494 |
12.52 |
| 2026-03-29 00:00 |
07:19:05.16 |
+26:51:40.8 |
HIP 35494 |
6.16 |
| 2026-03-29 12:00 |
07:19:33.93 |
+26:50:34.4 |
HIP 35494 |
1.39 |
| 2026-03-30 00:00 |
07:20:03.09 |
+26:49:26.8 |
HIP 35494 |
7.21 |
| 2026-03-30 12:00 |
07:20:32.61 |
+26:48:18.2 |
HIP 35494 |
13.84 |
| 2026-03-31 00:00 |
07:21:02.51 |
+26:47:08.5 |
HIP 35639 |
17.72 |
| 2026-03-31 12:00 |
07:21:32.77 |
+26:45:57.6 |
HIP 35639 |
16.74 |
| 2026-04-01 00:00 |
07:22:03.40 |
+26:44:45.7 |
HIP 35639 |
18.50 |
| 2026-04-01 12:00 |
07:22:34.39 |
+26:43:32.6 |
HIP 35639 |
22.42 |
| 2026-04-02 00:00 |
07:23:05.73 |
+26:42:18.4 |
HIP 35967 |
23.45 |
| 2026-04-02 12:00 |
07:23:37.43 |
+26:41:03.0 |
HIP 35967 |
16.26 |
| 2026-04-03 00:00 |
07:24:09.48 |
+26:39:46.5 |
HIP 35967 |
9.00 |
| 2026-04-03 12:00 |
07:24:41.88 |
+26:38:28.9 |
HIP 35967 |
1.72 |
| 2026-04-04 00:00 |
07:25:14.62 |
+26:37:10.1 |
HIP 35967 |
5.84 |
| 2026-04-04 12:00 |
07:25:47.71 |
+26:35:50.2 |
HIP 35967 |
13.34 |
| 2026-04-05 00:00 |
07:26:21.13 |
+26:34:29.1 |
HIP 35967 |
20.93 |
| 2026-04-05 12:00 |
07:26:54.90 |
+26:33:06.9 |
HIP 36262 |
24.44 |
| 2026-04-06 00:00 |
07:27:28.99 |
+26:31:43.5 |
HIP 36262 |
19.44 |
| 2026-04-06 12:00 |
07:28:03.42 |
+26:30:18.9 |
HIP 36262 |
16.67 |
| 2026-04-07 00:00 |
07:28:38.18 |
+26:28:53.2 |
HIP 36262 |
17.37 |
| 2026-04-07 12:00 |
07:29:13.27 |
+26:27:26.2 |
HIP 36262 |
21.28 |
| 2026-04-08 00:00 |
07:29:48.68 |
+26:25:58.1 |
HIP 36601 |
24.72 |
| 2026-04-08 12:00 |
07:30:24.41 |
+26:24:28.7 |
HIP 36601 |
16.97 |
| 2026-04-09 00:00 |
07:31:00.45 |
+26:22:58.2 |
HIP 36601 |
9.82 |
| 2026-04-09 12:00 |
07:31:36.81 |
+26:21:26.4 |
HIP 36601 |
6.30 |
| 2026-04-10 00:00 |
07:32:13.49 |
+26:19:53.5 |
HIP 36601 |
11.03 |
| 2026-04-10 12:00 |
07:32:50.48 |
+26:18:19.3 |
HIP 36725 |
12.53 |
| 2026-04-11 00:00 |
07:33:27.77 |
+26:16:43.9 |
HIP 36725 |
10.46 |
| 2026-04-11 12:00 |
07:34:05.37 |
+26:15:07.3 |
HIP 36725 |
14.43 |
| 2026-04-12 00:00 |
07:34:43.27 |
+26:13:29.4 |
HIP 36725 |
21.38 |
| 2026-04-12 12:00 |
07:35:21.47 |
+26:11:50.2 |
HIP 36912 |
24.30 |
| 2026-04-13 00:00 |
07:35:59.97 |
+26:10:09.9 |
HIP 36912 |
27.39 |
| 2026-04-13 12:00 |
07:36:38.76 |
+26:08:28.2 |
HIP 37064 |
24.78 |
| 2026-04-14 00:00 |
07:37:17.84 |
+26:06:45.3 |
HIP 37064 |
22.98 |
| 2026-04-14 12:00 |
07:37:57.22 |
+26:05:01.1 |
HIP 37064 |
24.56 |
| 2026-04-15 00:00 |
07:38:36.88 |
+26:03:15.7 |
HIP 37064 |
29.04 |
| 2026-04-15 12:00 |
07:39:16.82 |
+26:01:29.0 |
HIP 37452 |
28.31 |
| 2026-04-16 00:00 |
07:39:57.05 |
+25:59:40.9 |
HIP 37452 |
19.15 |