179P/Jedicke
| Parameter |
Value |
| Designation |
179P/Jedicke |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2007-12-04T01:14:19.337280Z |
| Orbit solution date (soln_date, UTC) |
2024-03-04T23:12:57Z |
| Obs used |
557 |
| NEO |
- |
| M1 |
5.300 |
| K1 |
17.250 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2014-10-31.0000000 |
| e |
0.30705141 |
| q (au) |
4.114093 |
| a (au) |
5.937083 |
| i (deg) |
19.855437 |
| Ω (om, deg) |
115.621251 |
| ω (w, deg) |
296.297189 |
| M (ma, deg) |
171.890865 |
Magnitude
Scatter + Global Linear
$$
M_a = (5.902 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
5.902 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.939 |
| 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 |
12:40:21.35 |
+16:51:40.7 |
HIP 61774 |
11.88 |
| 2026-02-03 12:00 |
12:40:17.62 |
+16:53:44.3 |
HIP 61774 |
10.12 |
| 2026-02-04 00:00 |
12:40:13.74 |
+16:55:48.5 |
HIP 61774 |
8.55 |
| 2026-02-04 12:00 |
12:40:09.71 |
+16:57:53.1 |
HIP 61774 |
7.31 |
| 2026-02-05 00:00 |
12:40:05.53 |
+16:59:58.1 |
HIP 61774 |
6.63 |
| 2026-02-05 12:00 |
12:40:01.19 |
+17:02:03.7 |
HIP 61774 |
6.70 |
| 2026-02-06 00:00 |
12:39:56.71 |
+17:04:09.6 |
HIP 61774 |
7.51 |
| 2026-02-06 12:00 |
12:39:52.08 |
+17:06:16.0 |
HIP 61774 |
8.89 |
| 2026-02-07 00:00 |
12:39:47.31 |
+17:08:22.8 |
HIP 61774 |
10.62 |
| 2026-02-07 12:00 |
12:39:42.38 |
+17:10:29.9 |
HIP 61774 |
12.59 |
| 2026-02-08 00:00 |
12:39:37.31 |
+17:12:37.5 |
HIP 61774 |
14.69 |
| 2026-02-08 12:00 |
12:39:32.09 |
+17:14:45.4 |
HIP 61718 |
13.54 |
| 2026-02-09 00:00 |
12:39:26.73 |
+17:16:53.6 |
HIP 61718 |
11.05 |
| 2026-02-09 12:00 |
12:39:21.22 |
+17:19:02.2 |
HIP 61718 |
8.54 |
| 2026-02-10 00:00 |
12:39:15.57 |
+17:21:11.1 |
HIP 61718 |
6.00 |
| 2026-02-10 12:00 |
12:39:09.77 |
+17:23:20.2 |
HIP 61718 |
3.44 |
| 2026-02-11 00:00 |
12:39:03.83 |
+17:25:29.7 |
HIP 61718 |
0.86 |
| 2026-02-11 12:00 |
12:38:57.75 |
+17:27:39.4 |
HIP 61718 |
1.74 |
| 2026-02-12 00:00 |
12:38:51.52 |
+17:29:49.4 |
HIP 61718 |
4.37 |
| 2026-02-12 12:00 |
12:38:45.16 |
+17:31:59.6 |
HIP 61718 |
7.02 |
| 2026-02-13 00:00 |
12:38:38.65 |
+17:34:10.0 |
HIP 61718 |
9.69 |
| 2026-02-13 12:00 |
12:38:32.01 |
+17:36:20.6 |
HIP 61718 |
12.38 |
| 2026-02-14 00:00 |
12:38:25.22 |
+17:38:31.4 |
HIP 61718 |
15.09 |
| 2026-02-14 12:00 |
12:38:18.30 |
+17:40:42.3 |
HIP 61718 |
17.82 |
| 2026-02-15 00:00 |
12:38:11.25 |
+17:42:53.4 |
HIP 61577 |
18.59 |
| 2026-02-15 12:00 |
12:38:04.06 |
+17:45:04.6 |
HIP 61577 |
16.00 |
| 2026-02-16 00:00 |
12:37:56.73 |
+17:47:15.9 |
HIP 61577 |
13.45 |
| 2026-02-16 12:00 |
12:37:49.28 |
+17:49:27.4 |
HIP 61577 |
11.01 |
| 2026-02-17 00:00 |
12:37:41.68 |
+17:51:38.8 |
HIP 61577 |
8.75 |
| 2026-02-17 12:00 |
12:37:33.96 |
+17:53:50.4 |
HIP 61577 |
6.91 |
| 2026-02-18 00:00 |
12:37:26.11 |
+17:56:01.9 |
HIP 61577 |
5.92 |
| 2026-02-18 12:00 |
12:37:18.13 |
+17:58:13.5 |
HIP 61577 |
6.22 |
| 2026-02-19 00:00 |
12:37:10.03 |
+18:00:25.1 |
HIP 61577 |
7.69 |
| 2026-02-19 12:00 |
12:37:01.80 |
+18:02:36.7 |
HIP 61577 |
9.83 |
| 2026-02-20 00:00 |
12:36:53.44 |
+18:04:48.2 |
HIP 61577 |
12.31 |
| 2026-02-20 12:00 |
12:36:44.96 |
+18:06:59.6 |
HIP 61577 |
14.98 |
| 2026-02-21 00:00 |
12:36:36.36 |
+18:09:11.0 |
HIP 61577 |
17.75 |
| 2026-02-21 12:00 |
12:36:27.63 |
+18:11:22.3 |
HIP 61577 |
20.60 |
| 2026-02-22 00:00 |
12:36:18.79 |
+18:13:33.4 |
HIP 61418 |
19.14 |
| 2026-02-22 12:00 |
12:36:09.83 |
+18:15:44.5 |
HIP 61418 |
16.26 |
| 2026-02-23 00:00 |
12:36:00.76 |
+18:17:55.3 |
HIP 61418 |
13.42 |
| 2026-02-23 12:00 |
12:35:51.56 |
+18:20:06.0 |
HIP 61418 |
10.69 |
| 2026-02-24 00:00 |
12:35:42.26 |
+18:22:16.5 |
HIP 61418 |
8.19 |