P/2023 Y1 (Gibbs)
| Parameter |
Value |
| Designation |
P/2023 Y1 (Gibbs) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2023-11-29T17:56:43.405440Z |
| Orbit solution date (soln_date, UTC) |
2024-05-14T12:42:28Z |
| Obs used |
94 |
| NEO |
- |
| M1 |
16.500 |
| K1 |
8.750 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2024-02-05.0000000 |
| e |
0.44505354 |
| q (au) |
2.079783 |
| a (au) |
3.747719 |
| i (deg) |
6.384063 |
| Ω (om, deg) |
78.857594 |
| ω (w, deg) |
51.430701 |
| M (ma, deg) |
9.136095 |
Magnitude
Scatter + Global Linear
$$
M_a = (13.789 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
13.789 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.929 |
| 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 |
18:56:15.55 |
-24:29:31.7 |
HIP 92994 |
9.94 |
| 2026-02-03 12:00 |
18:56:43.76 |
-24:29:11.1 |
HIP 92994 |
8.06 |
| 2026-02-04 00:00 |
18:57:11.88 |
-24:28:50.3 |
HIP 92994 |
10.65 |
| 2026-02-04 12:00 |
18:57:39.93 |
-24:28:29.4 |
HIP 92994 |
15.60 |
| 2026-02-05 00:00 |
18:58:07.90 |
-24:28:08.4 |
HIP 92994 |
21.32 |
| 2026-02-05 12:00 |
18:58:35.80 |
-24:27:47.3 |
HIP 93264 |
18.18 |
| 2026-02-06 00:00 |
18:59:03.61 |
-24:27:26.0 |
HIP 93264 |
11.96 |
| 2026-02-06 12:00 |
18:59:31.34 |
-24:27:04.6 |
HIP 93264 |
6.02 |
| 2026-02-07 00:00 |
18:59:58.98 |
-24:26:43.1 |
HIP 93264 |
3.05 |
| 2026-02-07 12:00 |
19:00:26.55 |
-24:26:21.5 |
HIP 93264 |
7.85 |
| 2026-02-08 00:00 |
19:00:54.03 |
-24:25:59.8 |
HIP 93264 |
13.87 |
| 2026-02-08 12:00 |
19:01:21.42 |
-24:25:38.0 |
HIP 93516 |
18.90 |
| 2026-02-09 00:00 |
19:01:48.73 |
-24:25:16.0 |
HIP 93516 |
12.76 |
| 2026-02-09 12:00 |
19:02:15.96 |
-24:24:54.0 |
HIP 93516 |
6.81 |
| 2026-02-10 00:00 |
19:02:43.09 |
-24:24:31.9 |
HIP 93516 |
2.66 |
| 2026-02-10 12:00 |
19:03:10.14 |
-24:24:09.8 |
HIP 93516 |
6.64 |
| 2026-02-11 00:00 |
19:03:37.10 |
-24:23:47.5 |
HIP 93516 |
12.52 |
| 2026-02-11 12:00 |
19:04:03.97 |
-24:23:25.2 |
HIP 93516 |
18.56 |
| 2026-02-12 00:00 |
19:04:30.75 |
-24:23:02.7 |
HIP 93723 |
18.23 |
| 2026-02-12 12:00 |
19:04:57.44 |
-24:22:40.3 |
HIP 93723 |
17.36 |
| 2026-02-13 00:00 |
19:05:24.03 |
-24:22:17.7 |
HIP 93723 |
18.55 |
| 2026-02-13 12:00 |
19:05:50.53 |
-24:21:55.1 |
HIP 93901 |
21.38 |
| 2026-02-14 00:00 |
19:06:16.93 |
-24:21:32.5 |
HIP 93901 |
16.45 |
| 2026-02-14 12:00 |
19:06:43.24 |
-24:21:09.8 |
HIP 93901 |
12.52 |
| 2026-02-15 00:00 |
19:07:09.46 |
-24:20:47.1 |
HIP 93901 |
10.71 |
| 2026-02-15 12:00 |
19:07:35.57 |
-24:20:24.3 |
HIP 93901 |
12.01 |
| 2026-02-16 00:00 |
19:08:01.59 |
-24:20:01.5 |
HIP 93901 |
15.63 |
| 2026-02-16 12:00 |
19:08:27.51 |
-24:19:38.7 |
HIP 93993 |
20.01 |
| 2026-02-17 00:00 |
19:08:53.33 |
-24:19:15.8 |
HIP 93993 |
22.02 |
| 2026-02-17 12:00 |
19:09:19.04 |
-24:18:53.0 |
HIP 94238 |
24.26 |
| 2026-02-18 00:00 |
19:09:44.66 |
-24:18:30.1 |
HIP 94238 |
18.67 |
| 2026-02-18 12:00 |
19:10:10.17 |
-24:18:07.2 |
HIP 94238 |
13.32 |
| 2026-02-19 00:00 |
19:10:35.58 |
-24:17:44.3 |
HIP 94238 |
8.64 |
| 2026-02-19 12:00 |
19:11:00.88 |
-24:17:21.4 |
HIP 94238 |
6.27 |
| 2026-02-20 00:00 |
19:11:26.08 |
-24:16:58.6 |
HIP 94238 |
8.39 |
| 2026-02-20 12:00 |
19:11:51.17 |
-24:16:35.7 |
HIP 94238 |
12.93 |
| 2026-02-21 00:00 |
19:12:16.15 |
-24:16:12.9 |
HIP 94397 |
14.64 |
| 2026-02-21 12:00 |
19:12:41.02 |
-24:15:50.1 |
HIP 94397 |
13.44 |
| 2026-02-22 00:00 |
19:13:05.79 |
-24:15:27.3 |
HIP 94397 |
14.53 |
| 2026-02-22 12:00 |
19:13:30.44 |
-24:15:04.5 |
HIP 94397 |
17.47 |
| 2026-02-23 00:00 |
19:13:54.98 |
-24:14:41.8 |
HIP 94397 |
21.48 |
| 2026-02-23 12:00 |
19:14:19.41 |
-24:14:19.2 |
HIP 94645 |
17.19 |
| 2026-02-24 00:00 |
19:14:43.73 |
-24:13:56.5 |
HIP 94645 |
11.71 |