248P/Gibbs
| Parameter |
Value |
| Designation |
248P/Gibbs |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2011-02-07T05:23:13.387200Z |
| Orbit solution date (soln_date, UTC) |
2026-01-13T08:12:54Z |
| Obs used |
301 |
| NEO |
- |
| M1 |
16.000 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2015-07-05.0000000 |
| e |
0.63902263 |
| q (au) |
2.161001 |
| a (au) |
5.986527 |
| i (deg) |
6.358916 |
| Ω (om, deg) |
207.793289 |
| ω (w, deg) |
210.153871 |
| M (ma, deg) |
108.252287 |
Magnitude
Scatter + Global Linear
$$
M_a = (16.584 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
16.584 |
| n |
2.000 |
| gf |
0.993 |
| gb |
-0.500 |
| k |
0.800 |
| δ90 |
2.329 |
| 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) |
| 2026-02-03 00:00 |
06:14:06.41 |
+14:02:40.2 |
HIP 29544 |
8.54 |
| 2026-02-03 12:00 |
06:14:07.49 |
+14:03:57.4 |
HIP 29544 |
9.13 |
| 2026-02-04 00:00 |
06:14:08.96 |
+14:05:14.9 |
HIP 29544 |
9.95 |
| 2026-02-04 12:00 |
06:14:10.80 |
+14:06:32.8 |
HIP 29544 |
10.95 |
| 2026-02-05 00:00 |
06:14:13.02 |
+14:07:51.0 |
HIP 29544 |
12.10 |
| 2026-02-05 12:00 |
06:14:15.63 |
+14:09:09.6 |
HIP 29544 |
13.38 |
| 2026-02-06 00:00 |
06:14:18.61 |
+14:10:28.4 |
HIP 29544 |
14.77 |
| 2026-02-06 12:00 |
06:14:21.98 |
+14:11:47.5 |
HIP 29599 |
15.23 |
| 2026-02-07 00:00 |
06:14:25.72 |
+14:13:06.8 |
HIP 29599 |
14.06 |
| 2026-02-07 12:00 |
06:14:29.84 |
+14:14:26.4 |
HIP 29599 |
13.00 |
| 2026-02-08 00:00 |
06:14:34.33 |
+14:15:46.2 |
HIP 29599 |
12.12 |
| 2026-02-08 12:00 |
06:14:39.21 |
+14:17:06.2 |
HIP 29599 |
11.47 |
| 2026-02-09 00:00 |
06:14:44.46 |
+14:18:26.3 |
HIP 29599 |
11.13 |
| 2026-02-09 12:00 |
06:14:50.08 |
+14:19:46.6 |
HIP 29599 |
11.15 |
| 2026-02-10 00:00 |
06:14:56.08 |
+14:21:07.1 |
HIP 29599 |
11.58 |
| 2026-02-10 12:00 |
06:15:02.46 |
+14:22:27.6 |
HIP 29599 |
12.39 |
| 2026-02-11 00:00 |
06:15:09.20 |
+14:23:48.3 |
HIP 29636 |
13.06 |
| 2026-02-11 12:00 |
06:15:16.32 |
+14:25:09.1 |
HIP 29636 |
12.92 |
| 2026-02-12 00:00 |
06:15:23.81 |
+14:26:29.9 |
HIP 29636 |
13.21 |
| 2026-02-12 12:00 |
06:15:31.67 |
+14:27:50.7 |
HIP 29636 |
13.94 |
| 2026-02-13 00:00 |
06:15:39.89 |
+14:29:11.6 |
HIP 29636 |
15.09 |
| 2026-02-13 12:00 |
06:15:48.49 |
+14:30:32.5 |
HIP 29636 |
16.59 |
| 2026-02-14 00:00 |
06:15:57.45 |
+14:31:53.4 |
HIP 29636 |
18.39 |
| 2026-02-14 12:00 |
06:16:06.78 |
+14:33:14.3 |
HIP 29636 |
20.44 |
| 2026-02-15 00:00 |
06:16:16.46 |
+14:34:35.1 |
HIP 29880 |
18.25 |
| 2026-02-15 12:00 |
06:16:26.52 |
+14:35:55.9 |
HIP 29880 |
16.06 |
| 2026-02-16 00:00 |
06:16:36.93 |
+14:37:16.5 |
HIP 29880 |
14.00 |
| 2026-02-16 12:00 |
06:16:47.70 |
+14:38:37.1 |
HIP 29880 |
12.19 |
| 2026-02-17 00:00 |
06:16:58.83 |
+14:39:57.6 |
HIP 29880 |
10.81 |
| 2026-02-17 12:00 |
06:17:10.31 |
+14:41:17.9 |
HIP 29880 |
10.12 |
| 2026-02-18 00:00 |
06:17:22.15 |
+14:42:38.1 |
HIP 29880 |
10.32 |
| 2026-02-18 12:00 |
06:17:34.34 |
+14:43:58.1 |
HIP 29880 |
11.43 |
| 2026-02-19 00:00 |
06:17:46.89 |
+14:45:17.9 |
HIP 29880 |
13.28 |
| 2026-02-19 12:00 |
06:17:59.78 |
+14:46:37.5 |
HIP 29880 |
15.65 |
| 2026-02-20 00:00 |
06:18:13.02 |
+14:47:56.9 |
HIP 29880 |
18.39 |
| 2026-02-20 12:00 |
06:18:26.61 |
+14:49:16.0 |
HIP 29880 |
21.38 |
| 2026-02-21 00:00 |
06:18:40.53 |
+14:50:34.9 |
HIP 30099 |
23.28 |
| 2026-02-21 12:00 |
06:18:54.80 |
+14:51:53.5 |
HIP 30099 |
21.12 |
| 2026-02-22 00:00 |
06:19:09.41 |
+14:53:11.8 |
HIP 30099 |
19.37 |
| 2026-02-22 12:00 |
06:19:24.35 |
+14:54:29.9 |
HIP 30099 |
18.19 |
| 2026-02-23 00:00 |
06:19:39.63 |
+14:55:47.6 |
HIP 30099 |
17.75 |
| 2026-02-23 12:00 |
06:19:55.24 |
+14:57:04.9 |
HIP 30099 |
18.14 |
| 2026-02-24 00:00 |
06:20:11.18 |
+14:58:22.0 |
HIP 30099 |
19.37 |