C/2024 G1 (Wierzchos)
| Parameter |
Value |
| Designation |
C/2024 G1 (Wierzchos) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2024-10-21T02:22:13.702080Z |
| Orbit solution date (soln_date, UTC) |
2025-05-08T09:42:17Z |
| Obs used |
112 |
| NEO |
- |
| M1 |
7.200 |
| K1 |
16.000 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2024-07-09.0000000 |
| e |
0.96744521 |
| q (au) |
3.930143 |
| a (au) |
120.723934 |
| i (deg) |
95.400994 |
| Ω (om, deg) |
30.599798 |
| ω (w, deg) |
128.228357 |
| M (ma, deg) |
359.922650 |
Magnitude
Scatter + Global Linear
$$
M_a = (7.404 + 5.601\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
7.404 |
| n |
5.601 |
| gf |
0.996 |
| gb |
-0.500 |
| k |
1.000 |
| 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) |
| 2026-02-03 00:00 |
14:09:56.56 |
-28:00:46.7 |
HIP 69288 |
24.45 |
| 2026-02-03 12:00 |
14:09:46.61 |
-28:04:22.1 |
HIP 69288 |
22.99 |
| 2026-02-04 00:00 |
14:09:36.43 |
-28:07:56.8 |
HIP 69288 |
22.30 |
| 2026-02-04 12:00 |
14:09:26.02 |
-28:11:31.0 |
HIP 69249 |
21.20 |
| 2026-02-05 00:00 |
14:09:15.36 |
-28:15:04.5 |
HIP 69249 |
20.78 |
| 2026-02-05 12:00 |
14:09:04.47 |
-28:18:37.3 |
HIP 69249 |
21.29 |
| 2026-02-06 00:00 |
14:08:53.34 |
-28:22:09.4 |
HIP 69249 |
22.65 |
| 2026-02-06 12:00 |
14:08:41.96 |
-28:25:40.9 |
HIP 69249 |
24.75 |
| 2026-02-07 00:00 |
14:08:30.35 |
-28:29:11.6 |
HIP 69249 |
27.43 |
| 2026-02-07 12:00 |
14:08:18.49 |
-28:32:41.6 |
HIP 69017 |
29.86 |
| 2026-02-08 00:00 |
14:08:06.39 |
-28:36:10.9 |
HIP 69017 |
25.87 |
| 2026-02-08 12:00 |
14:07:54.05 |
-28:39:39.5 |
HIP 69017 |
22.02 |
| 2026-02-09 00:00 |
14:07:41.47 |
-28:43:07.3 |
HIP 69017 |
18.45 |
| 2026-02-09 12:00 |
14:07:28.64 |
-28:46:34.3 |
HIP 69017 |
15.34 |
| 2026-02-10 00:00 |
14:07:15.57 |
-28:50:00.5 |
HIP 69017 |
13.08 |
| 2026-02-10 12:00 |
14:07:02.25 |
-28:53:26.0 |
HIP 69017 |
12.16 |
| 2026-02-11 00:00 |
14:06:48.69 |
-28:56:50.6 |
HIP 69017 |
12.90 |
| 2026-02-11 12:00 |
14:06:34.88 |
-29:00:14.4 |
HIP 69017 |
15.08 |
| 2026-02-12 00:00 |
14:06:20.82 |
-29:03:37.4 |
HIP 69017 |
18.20 |
| 2026-02-12 12:00 |
14:06:06.52 |
-29:06:59.5 |
HIP 69017 |
21.89 |
| 2026-02-13 00:00 |
14:05:51.97 |
-29:10:20.7 |
HIP 68760 |
19.77 |
| 2026-02-13 12:00 |
14:05:37.18 |
-29:13:41.1 |
HIP 68760 |
18.33 |
| 2026-02-14 00:00 |
14:05:22.13 |
-29:17:00.6 |
HIP 68760 |
17.95 |
| 2026-02-14 12:00 |
14:05:06.84 |
-29:20:19.1 |
HIP 68760 |
18.74 |
| 2026-02-15 00:00 |
14:04:51.31 |
-29:23:36.8 |
HIP 68760 |
20.57 |
| 2026-02-15 12:00 |
14:04:35.52 |
-29:26:53.5 |
HIP 68760 |
23.21 |
| 2026-02-16 00:00 |
14:04:19.49 |
-29:30:09.2 |
HIP 68613 |
21.10 |
| 2026-02-16 12:00 |
14:04:03.21 |
-29:33:24.0 |
HIP 68613 |
19.12 |
| 2026-02-17 00:00 |
14:03:46.68 |
-29:36:37.7 |
HIP 68613 |
18.17 |
| 2026-02-17 12:00 |
14:03:29.90 |
-29:39:50.5 |
HIP 68757 |
18.34 |
| 2026-02-18 00:00 |
14:03:12.88 |
-29:43:02.3 |
HIP 68757 |
18.87 |
| 2026-02-18 12:00 |
14:02:55.61 |
-29:46:13.0 |
HIP 68757 |
20.63 |
| 2026-02-19 00:00 |
14:02:38.09 |
-29:49:22.7 |
HIP 68757 |
23.37 |
| 2026-02-19 12:00 |
14:02:20.33 |
-29:52:31.3 |
HIP 68757 |
26.80 |
| 2026-02-20 00:00 |
14:02:02.32 |
-29:55:38.9 |
HIP 68757 |
30.70 |
| 2026-02-20 12:00 |
14:01:44.06 |
-29:58:45.3 |
HIP 68757 |
34.93 |
| 2026-02-21 00:00 |
14:01:25.56 |
-30:01:50.7 |
HIP 68310 |
32.36 |
| 2026-02-21 12:00 |
14:01:06.82 |
-30:04:54.9 |
HIP 68310 |
27.76 |
| 2026-02-22 00:00 |
14:00:47.83 |
-30:07:58.0 |
HIP 68310 |
23.31 |
| 2026-02-22 12:00 |
14:00:28.60 |
-30:11:00.0 |
HIP 68310 |
19.14 |
| 2026-02-23 00:00 |
14:00:09.13 |
-30:14:00.7 |
HIP 68310 |
15.52 |
| 2026-02-23 12:00 |
13:59:49.41 |
-30:17:00.4 |
HIP 68310 |
12.95 |
| 2026-02-24 00:00 |
13:59:29.46 |
-30:19:58.8 |
HIP 68310 |
12.15 |