383P/Christensen
| Parameter |
Value |
| Designation |
383P/Christensen |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2006-08-30T05:44:57.664320Z |
| Orbit solution date (soln_date, UTC) |
2022-07-31T01:43:33Z |
| Obs used |
349 |
| NEO |
- |
| M1 |
18.600 |
| K1 |
7.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2019-06-25T21:31:28.704000Z |
| Discovery magnitude (MPC) |
19.90 T |
| Discovery observatory (MPC) |
461 · University of Szeged, Piszkéstető Stn. (Konkoly) |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2008-01-01.0000000 |
| e |
0.61142650 |
| q (au) |
1.358952 |
| a (au) |
3.497285 |
| i (deg) |
11.867784 |
| Ω (om, deg) |
213.637200 |
| ω (w, deg) |
128.061041 |
| M (ma, deg) |
73.655222 |
Magnitude
Scatter + Global Linear
$$
M_a = (16.746 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
16.746 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.911 |
| k |
0.993 |
| 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) |
| 2026-02-03 00:00 |
18:23:43.35 |
-16:03:19.3 |
HIP 90001 |
31.88 |
| 2026-02-03 12:00 |
18:24:53.86 |
-16:01:13.2 |
HIP 90369 |
31.86 |
| 2026-02-04 00:00 |
18:26:04.46 |
-15:59:04.7 |
HIP 90369 |
21.76 |
| 2026-02-04 12:00 |
18:27:15.16 |
-15:56:53.8 |
HIP 90369 |
22.75 |
| 2026-02-05 00:00 |
18:28:25.97 |
-15:54:40.4 |
HIP 90678 |
29.67 |
| 2026-02-05 12:00 |
18:29:36.88 |
-15:52:24.6 |
HIP 90678 |
20.46 |
| 2026-02-06 00:00 |
18:30:47.88 |
-15:50:06.3 |
HIP 90678 |
23.45 |
| 2026-02-06 12:00 |
18:31:58.99 |
-15:47:45.5 |
HIP 90897 |
10.63 |
| 2026-02-07 00:00 |
18:33:10.20 |
-15:45:22.3 |
HIP 90907 |
8.46 |
| 2026-02-07 12:00 |
18:34:21.51 |
-15:42:56.5 |
HIP 90907 |
24.97 |
| 2026-02-08 00:00 |
18:35:32.92 |
-15:40:28.3 |
HIP 91251 |
24.21 |
| 2026-02-08 12:00 |
18:36:44.42 |
-15:37:57.5 |
HIP 91251 |
18.78 |
| 2026-02-09 00:00 |
18:37:56.03 |
-15:35:24.3 |
HIP 91251 |
26.95 |
| 2026-02-09 12:00 |
18:39:07.73 |
-15:32:48.5 |
HIP 91448 |
30.48 |
| 2026-02-10 00:00 |
18:40:19.54 |
-15:30:10.1 |
HIP 91448 |
33.44 |
| 2026-02-10 12:00 |
18:41:31.44 |
-15:27:29.2 |
HIP 91758 |
16.91 |
| 2026-02-11 00:00 |
18:42:43.44 |
-15:24:45.8 |
HIP 91758 |
6.61 |
| 2026-02-11 12:00 |
18:43:55.53 |
-15:21:59.8 |
HIP 91871 |
6.07 |
| 2026-02-12 00:00 |
18:45:07.72 |
-15:19:11.2 |
HIP 92090 |
16.84 |
| 2026-02-12 12:00 |
18:46:20.01 |
-15:16:20.1 |
HIP 92090 |
12.70 |
| 2026-02-13 00:00 |
18:47:32.40 |
-15:13:26.4 |
HIP 92292 |
16.18 |
| 2026-02-13 12:00 |
18:48:44.88 |
-15:10:30.1 |
HIP 92292 |
7.46 |
| 2026-02-14 00:00 |
18:49:57.46 |
-15:07:31.2 |
HIP 92292 |
21.90 |
| 2026-02-14 12:00 |
18:51:10.13 |
-15:04:29.7 |
HIP 92529 |
23.69 |
| 2026-02-15 00:00 |
18:52:22.89 |
-15:01:25.5 |
HIP 92660 |
19.96 |
| 2026-02-15 12:00 |
18:53:35.75 |
-14:58:18.8 |
HIP 92660 |
23.54 |
| 2026-02-16 00:00 |
18:54:48.71 |
-14:55:09.4 |
HIP 92854 |
15.12 |
| 2026-02-16 12:00 |
18:56:01.75 |
-14:51:57.4 |
HIP 92913 |
4.06 |
| 2026-02-17 00:00 |
18:57:14.89 |
-14:48:42.8 |
HIP 93000 |
7.48 |
| 2026-02-17 12:00 |
18:58:28.12 |
-14:45:25.5 |
HIP 93164 |
2.26 |
| 2026-02-18 00:00 |
18:59:41.45 |
-14:42:05.6 |
HIP 93164 |
16.09 |
| 2026-02-18 12:00 |
19:00:54.86 |
-14:38:43.0 |
HIP 93278 |
28.21 |
| 2026-02-19 00:00 |
19:02:08.37 |
-14:35:17.8 |
HIP 93536 |
21.96 |
| 2026-02-19 12:00 |
19:03:21.97 |
-14:31:49.9 |
HIP 93651 |
17.36 |
| 2026-02-20 00:00 |
19:04:35.66 |
-14:28:19.3 |
HIP 93651 |
9.76 |
| 2026-02-20 12:00 |
19:05:49.44 |
-14:24:46.1 |
HIP 93651 |
23.48 |
| 2026-02-21 00:00 |
19:07:03.30 |
-14:21:10.2 |
HIP 93651 |
40.91 |
| 2026-02-21 12:00 |
19:08:17.26 |
-14:17:31.6 |
HIP 93895 |
41.02 |
| 2026-02-22 00:00 |
19:09:31.31 |
-14:13:50.3 |
HIP 94265 |
27.13 |
| 2026-02-22 12:00 |
19:10:45.45 |
-14:10:06.3 |
HIP 94265 |
10.03 |
| 2026-02-23 00:00 |
19:11:59.68 |
-14:06:19.6 |
HIP 94265 |
11.80 |
| 2026-02-23 12:00 |
19:13:13.99 |
-14:02:30.2 |
HIP 94500 |
11.17 |
| 2026-02-24 00:00 |
19:14:28.40 |
-13:58:38.1 |
HIP 94500 |
7.82 |