| Parameter |
Value |
| Designation |
54P/de Vico-Swift-NEAT |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-09-03T15:26:15.469440Z |
| Orbit solution date (soln_date, UTC) |
2024-12-30T09:36:39Z |
| Obs used |
275 |
| NEO |
- |
| M1 |
14.200 |
| K1 |
12.250 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2021-09-04.0000000 |
| e |
0.42608476 |
| q (au) |
2.175873 |
| a (au) |
3.791280 |
| i (deg) |
6.064463 |
| Ω (om, deg) |
358.816365 |
| ω (w, deg) |
1.789059 |
| M (ma, deg) |
213.716794 |
Magnitude
Scatter + Global Linear
$$
M_a = (12.781 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
12.781 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.709 |
| k |
0.993 |
| 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
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
07:35:43.23 |
+27:06:02.8 |
HIP 36962 |
12.58 |
| 2026-03-26 12:00 |
07:35:48.79 |
+27:04:57.2 |
HIP 36962 |
11.29 |
| 2026-03-27 00:00 |
07:35:54.61 |
+27:03:51.2 |
HIP 36962 |
10.09 |
| 2026-03-27 12:00 |
07:36:00.69 |
+27:02:44.8 |
HIP 36962 |
9.06 |
| 2026-03-28 00:00 |
07:36:07.03 |
+27:01:37.9 |
HIP 36962 |
8.29 |
| 2026-03-28 12:00 |
07:36:13.63 |
+27:00:30.6 |
HIP 36962 |
7.88 |
| 2026-03-29 00:00 |
07:36:20.48 |
+26:59:22.9 |
HIP 36962 |
7.93 |
| 2026-03-29 12:00 |
07:36:27.57 |
+26:58:14.7 |
HIP 36962 |
8.46 |
| 2026-03-30 00:00 |
07:36:34.92 |
+26:57:06.2 |
HIP 36962 |
9.43 |
| 2026-03-30 12:00 |
07:36:42.52 |
+26:55:57.2 |
HIP 36962 |
10.74 |
| 2026-03-31 00:00 |
07:36:50.37 |
+26:54:47.9 |
HIP 36962 |
12.30 |
| 2026-03-31 12:00 |
07:36:58.46 |
+26:53:38.1 |
HIP 36962 |
14.07 |
| 2026-04-01 00:00 |
07:37:06.79 |
+26:52:28.0 |
HIP 36962 |
15.98 |
| 2026-04-01 12:00 |
07:37:15.36 |
+26:51:17.4 |
HIP 37195 |
16.74 |
| 2026-04-02 00:00 |
07:37:24.18 |
+26:50:06.5 |
HIP 37195 |
14.56 |
| 2026-04-02 12:00 |
07:37:33.23 |
+26:48:55.2 |
HIP 37195 |
12.37 |
| 2026-04-03 00:00 |
07:37:42.52 |
+26:47:43.5 |
HIP 37195 |
10.20 |
| 2026-04-03 12:00 |
07:37:52.05 |
+26:46:31.4 |
HIP 37195 |
8.09 |
| 2026-04-04 00:00 |
07:38:01.81 |
+26:45:18.9 |
HIP 37195 |
6.19 |
| 2026-04-04 12:00 |
07:38:11.80 |
+26:44:06.0 |
HIP 37195 |
4.82 |
| 2026-04-05 00:00 |
07:38:22.02 |
+26:42:52.8 |
HIP 37195 |
4.57 |
| 2026-04-05 12:00 |
07:38:32.47 |
+26:41:39.2 |
HIP 37195 |
5.67 |
| 2026-04-06 00:00 |
07:38:43.15 |
+26:40:25.2 |
HIP 37195 |
7.59 |
| 2026-04-06 12:00 |
07:38:54.06 |
+26:39:10.8 |
HIP 37195 |
9.91 |
| 2026-04-07 00:00 |
07:39:05.18 |
+26:37:56.1 |
HIP 37337 |
12.05 |
| 2026-04-07 12:00 |
07:39:16.54 |
+26:36:41.0 |
HIP 37337 |
10.58 |
| 2026-04-08 00:00 |
07:39:28.11 |
+26:35:25.6 |
HIP 37337 |
9.71 |
| 2026-04-08 12:00 |
07:39:39.90 |
+26:34:09.7 |
HIP 37337 |
9.64 |
| 2026-04-09 00:00 |
07:39:51.91 |
+26:32:53.5 |
HIP 37337 |
10.43 |
| 2026-04-09 12:00 |
07:40:04.14 |
+26:31:37.0 |
HIP 37337 |
11.94 |
| 2026-04-10 00:00 |
07:40:16.59 |
+26:30:20.1 |
HIP 37337 |
13.97 |
| 2026-04-10 12:00 |
07:40:29.24 |
+26:29:02.8 |
HIP 37337 |
16.36 |
| 2026-04-11 00:00 |
07:40:42.11 |
+26:27:45.2 |
HIP 37337 |
18.99 |
| 2026-04-11 12:00 |
07:40:55.19 |
+26:26:27.2 |
HIP 37337 |
21.79 |
| 2026-04-12 00:00 |
07:41:08.48 |
+26:25:08.8 |
HIP 37337 |
24.73 |
| 2026-04-12 12:00 |
07:41:21.98 |
+26:23:50.1 |
HIP 37337 |
27.78 |
| 2026-04-13 00:00 |
07:41:35.69 |
+26:22:31.0 |
HIP 37642 |
28.60 |
| 2026-04-13 12:00 |
07:41:49.60 |
+26:21:11.6 |
HIP 37642 |
26.58 |
| 2026-04-14 00:00 |
07:42:03.71 |
+26:19:51.8 |
HIP 37642 |
24.83 |
| 2026-04-14 12:00 |
07:42:18.02 |
+26:18:31.6 |
HIP 37642 |
23.42 |
| 2026-04-15 00:00 |
07:42:32.54 |
+26:17:11.2 |
HIP 37642 |
22.44 |
| 2026-04-15 12:00 |
07:42:47.25 |
+26:15:50.3 |
HIP 37642 |
21.98 |
| 2026-04-16 00:00 |
07:43:02.16 |
+26:14:29.1 |
HIP 37642 |
22.07 |