| Parameter |
Value |
| Designation |
248P/Gibbs |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2011-02-05T10:57:25.790400Z |
| Orbit solution date (soln_date, UTC) |
2026-04-14T13:42:33Z |
| Obs used |
345 |
| NEO |
- |
| M1 |
16.000 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2016-06-27.0000000 |
| e |
0.63834584 |
| q (au) |
2.165430 |
| a (au) |
5.987571 |
| i (deg) |
6.354176 |
| Ω (om, deg) |
207.784271 |
| ω (w, deg) |
210.161843 |
| M (ma, deg) |
132.425937 |
Magnitude
Scatter + Global Linear
$$
M_a = (15.555 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
15.555 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.732 |
| k |
0.994 |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
09:30:15.07 |
+10:09:21.1 |
HIP 46681 |
11.37 |
| 2026-07-29 12:00 |
09:30:54.29 |
+10:06:23.6 |
HIP 46681 |
3.40 |
| 2026-07-30 00:00 |
09:31:33.46 |
+10:03:25.7 |
HIP 46681 |
9.87 |
| 2026-07-30 12:00 |
09:32:12.58 |
+10:00:27.4 |
HIP 46854 |
12.22 |
| 2026-07-31 00:00 |
09:32:51.66 |
+09:57:28.7 |
HIP 46854 |
4.24 |
| 2026-07-31 12:00 |
09:33:30.69 |
+09:54:29.6 |
HIP 46854 |
9.45 |
| 2026-08-01 00:00 |
09:34:09.68 |
+09:51:30.1 |
HIP 47012 |
15.20 |
| 2026-08-01 12:00 |
09:34:48.62 |
+09:48:30.2 |
HIP 47012 |
7.94 |
| 2026-08-02 00:00 |
09:35:27.51 |
+09:45:29.9 |
HIP 47091 |
8.37 |
| 2026-08-02 12:00 |
09:36:06.36 |
+09:42:29.2 |
HIP 47091 |
10.57 |
| 2026-08-03 00:00 |
09:36:45.16 |
+09:39:28.2 |
HIP 47091 |
18.83 |
| 2026-08-03 12:00 |
09:37:23.91 |
+09:36:26.8 |
HIP 47325 |
17.76 |
| 2026-08-04 00:00 |
09:38:02.61 |
+09:33:25.1 |
HIP 47325 |
9.18 |
| 2026-08-04 12:00 |
09:38:41.27 |
+09:30:22.9 |
HIP 47325 |
7.32 |
| 2026-08-05 00:00 |
09:39:19.88 |
+09:27:20.4 |
HIP 47435 |
9.89 |
| 2026-08-05 12:00 |
09:39:58.45 |
+09:24:17.6 |
HIP 47435 |
6.36 |
| 2026-08-06 00:00 |
09:40:36.96 |
+09:21:14.4 |
HIP 47462 |
4.57 |
| 2026-08-06 12:00 |
09:41:15.43 |
+09:18:10.8 |
HIP 47462 |
13.15 |
| 2026-08-07 00:00 |
09:41:53.85 |
+09:15:06.9 |
HIP 47518 |
18.17 |
| 2026-08-07 12:00 |
09:42:32.22 |
+09:12:02.7 |
HIP 47518 |
22.77 |
| 2026-08-08 00:00 |
09:43:10.54 |
+09:08:58.1 |
HIP 47656 |
20.58 |
| 2026-08-08 12:00 |
09:43:48.81 |
+09:05:53.2 |
HIP 47656 |
21.07 |
| 2026-08-09 00:00 |
09:44:27.04 |
+09:02:48.0 |
HIP 47862 |
15.74 |
| 2026-08-09 12:00 |
09:45:05.21 |
+08:59:42.4 |
HIP 47862 |
7.32 |
| 2026-08-10 00:00 |
09:45:43.33 |
+08:56:36.6 |
HIP 47862 |
7.50 |
| 2026-08-10 12:00 |
09:46:21.40 |
+08:53:30.4 |
HIP 47862 |
15.97 |
| 2026-08-11 00:00 |
09:46:59.43 |
+08:50:23.9 |
HIP 48014 |
16.71 |
| 2026-08-11 12:00 |
09:47:37.39 |
+08:47:17.2 |
HIP 48014 |
14.03 |
| 2026-08-12 00:00 |
09:48:15.31 |
+08:44:10.1 |
HIP 48146 |
17.08 |
| 2026-08-12 12:00 |
09:48:53.18 |
+08:41:02.7 |
HIP 48146 |
17.42 |
| 2026-08-13 00:00 |
09:49:30.99 |
+08:37:55.1 |
HIP 48145 |
21.95 |
| 2026-08-13 12:00 |
09:50:08.75 |
+08:34:47.2 |
HIP 48370 |
24.81 |
| 2026-08-14 00:00 |
09:50:46.45 |
+08:31:39.0 |
HIP 48370 |
15.13 |
| 2026-08-14 12:00 |
09:51:24.11 |
+08:28:30.6 |
HIP 48370 |
5.96 |
| 2026-08-15 00:00 |
09:52:01.70 |
+08:25:21.9 |
HIP 48370 |
5.94 |
| 2026-08-15 12:00 |
09:52:39.25 |
+08:22:12.9 |
HIP 48370 |
15.08 |
| 2026-08-16 00:00 |
09:53:16.73 |
+08:19:03.7 |
HIP 48553 |
19.12 |
| 2026-08-16 12:00 |
09:53:54.16 |
+08:15:54.3 |
HIP 48553 |
11.84 |
| 2026-08-17 00:00 |
09:54:31.54 |
+08:12:44.6 |
HIP 48553 |
10.31 |
| 2026-08-17 12:00 |
09:55:08.86 |
+08:09:34.7 |
HIP 48553 |
16.22 |
| 2026-08-18 00:00 |
09:55:46.12 |
+08:06:24.6 |
HIP 48553 |
24.69 |
| 2026-08-18 12:00 |
09:56:23.33 |
+08:03:14.2 |
HIP 48699 |
23.66 |
| 2026-08-19 00:00 |
09:57:00.48 |
+08:00:03.6 |
HIP 48876 |
25.08 |