| Parameter |
Value |
| Designation |
192P/Shoemaker-Levy 1 |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2007-12-14T02:44:52.307520Z |
| Orbit solution date (soln_date, UTC) |
2025-03-06T13:42:28Z |
| Obs used |
200 |
| NEO |
- |
| M1 |
11.500 |
| K1 |
18.000 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2014-08-19.0000000 |
| e |
0.77201142 |
| q (au) |
1.476460 |
| a (au) |
6.476025 |
| i (deg) |
24.543649 |
| Ω (om, deg) |
51.586767 |
| ω (w, deg) |
313.081833 |
| M (ma, deg) |
145.918634 |
Magnitude
Scatter + Global Linear
$$
M_a = (11.581 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
11.581 |
| n |
6.000 |
| gf |
1.000 |
| 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) |
| 2026-07-29 00:00 |
10:18:44.71 |
+33:34:55.3 |
HIP 50587 |
16.28 |
| 2026-07-29 12:00 |
10:19:04.76 |
+33:32:44.7 |
HIP 50587 |
12.04 |
| 2026-07-30 00:00 |
10:19:24.83 |
+33:30:34.5 |
HIP 50587 |
8.31 |
| 2026-07-30 12:00 |
10:19:44.93 |
+33:28:24.6 |
HIP 50587 |
6.11 |
| 2026-07-31 00:00 |
10:20:05.04 |
+33:26:15.1 |
HIP 50587 |
7.07 |
| 2026-07-31 12:00 |
10:20:25.18 |
+33:24:05.9 |
HIP 50587 |
10.34 |
| 2026-08-01 00:00 |
10:20:45.33 |
+33:21:57.2 |
HIP 50715 |
9.58 |
| 2026-08-01 12:00 |
10:21:05.51 |
+33:19:48.7 |
HIP 50715 |
9.02 |
| 2026-08-02 00:00 |
10:21:25.71 |
+33:17:40.7 |
HIP 50715 |
10.74 |
| 2026-08-02 12:00 |
10:21:45.92 |
+33:15:33.0 |
HIP 50837 |
13.60 |
| 2026-08-03 00:00 |
10:22:06.16 |
+33:13:25.7 |
HIP 50837 |
9.95 |
| 2026-08-03 12:00 |
10:22:26.41 |
+33:11:18.8 |
HIP 50837 |
7.58 |
| 2026-08-04 00:00 |
10:22:46.68 |
+33:09:12.3 |
HIP 50837 |
7.78 |
| 2026-08-04 12:00 |
10:23:06.97 |
+33:07:06.2 |
HIP 50835 |
7.16 |
| 2026-08-05 00:00 |
10:23:27.27 |
+33:05:00.4 |
HIP 50835 |
8.94 |
| 2026-08-05 12:00 |
10:23:47.59 |
+33:02:55.1 |
HIP 50835 |
12.40 |
| 2026-08-06 00:00 |
10:24:07.92 |
+33:00:50.1 |
HIP 50835 |
16.51 |
| 2026-08-06 12:00 |
10:24:28.27 |
+32:58:45.6 |
HIP 51044 |
20.32 |
| 2026-08-07 00:00 |
10:24:48.63 |
+32:56:41.4 |
HIP 51044 |
15.76 |
| 2026-08-07 12:00 |
10:25:09.01 |
+32:54:37.7 |
HIP 51044 |
11.37 |
| 2026-08-08 00:00 |
10:25:29.40 |
+32:52:34.3 |
HIP 51044 |
7.44 |
| 2026-08-08 12:00 |
10:25:49.80 |
+32:50:31.4 |
HIP 51044 |
5.15 |
| 2026-08-09 00:00 |
10:26:10.21 |
+32:48:28.9 |
HIP 51044 |
6.56 |
| 2026-08-09 12:00 |
10:26:30.64 |
+32:46:26.8 |
HIP 51044 |
10.23 |
| 2026-08-10 00:00 |
10:26:51.07 |
+32:44:25.2 |
HIP 51044 |
14.55 |
| 2026-08-10 12:00 |
10:27:11.51 |
+32:42:23.9 |
HIP 51044 |
19.08 |
| 2026-08-11 00:00 |
10:27:31.97 |
+32:40:23.1 |
HIP 51205 |
22.11 |
| 2026-08-11 12:00 |
10:27:52.43 |
+32:38:22.8 |
HIP 51205 |
24.45 |
| 2026-08-12 00:00 |
10:28:12.89 |
+32:36:22.9 |
HIP 51337 |
24.74 |
| 2026-08-12 12:00 |
10:28:33.37 |
+32:34:23.4 |
HIP 51337 |
24.85 |
| 2026-08-13 00:00 |
10:28:53.85 |
+32:32:24.4 |
HIP 51337 |
25.85 |
| 2026-08-13 12:00 |
10:29:14.34 |
+32:30:25.8 |
HIP 51337 |
27.62 |
| 2026-08-14 00:00 |
10:29:34.83 |
+32:28:27.7 |
HIP 51352 |
28.12 |
| 2026-08-14 12:00 |
10:29:55.33 |
+32:26:30.1 |
HIP 51556 |
24.77 |
| 2026-08-15 00:00 |
10:30:15.83 |
+32:24:32.9 |
HIP 51556 |
20.25 |
| 2026-08-15 12:00 |
10:30:36.33 |
+32:22:36.2 |
HIP 51556 |
15.84 |
| 2026-08-16 00:00 |
10:30:56.83 |
+32:20:40.0 |
HIP 51556 |
11.71 |
| 2026-08-16 12:00 |
10:31:17.34 |
+32:18:44.3 |
HIP 51556 |
8.24 |
| 2026-08-17 00:00 |
10:31:37.84 |
+32:16:49.0 |
HIP 51556 |
6.61 |
| 2026-08-17 12:00 |
10:31:58.35 |
+32:14:54.2 |
HIP 51556 |
8.01 |
| 2026-08-18 00:00 |
10:32:18.85 |
+32:13:00.0 |
HIP 51556 |
11.37 |
| 2026-08-18 12:00 |
10:32:39.36 |
+32:11:06.1 |
HIP 51556 |
15.46 |
| 2026-08-19 00:00 |
10:32:59.86 |
+32:09:12.8 |
HIP 51556 |
19.84 |