| Parameter |
Value |
| Designation |
411P/Christensen |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2007-01-23T00:31:58.823040Z |
| Orbit solution date (soln_date, UTC) |
2025-04-24T09:42:33Z |
| Obs used |
225 |
| NEO |
- |
| M1 |
14.700 |
| K1 |
10.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2020-11-17T03:08:54.816000Z |
| Discovery magnitude (MPC) |
21.70 T |
| Discovery observatory (MPC) |
Z84 · Calar Alto-Schmidt |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2013-10-24.0000000 |
| e |
0.58199405 |
| q (au) |
2.427425 |
| a (au) |
5.807155 |
| i (deg) |
12.393842 |
| Ω (om, deg) |
77.817671 |
| ω (w, deg) |
46.668360 |
| M (ma, deg) |
173.679301 |
Magnitude
Scatter + Global Linear
$$
M_a = (12.891 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
12.891 |
| n |
6.000 |
| gf |
0.820 |
| gb |
-0.500 |
| k |
0.962 |
| δ90 |
1.000 |
| 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) |
| 2026-06-01 00:00 |
19:48:59.07 |
-28:24:23.8 |
HIP 97505 |
1.36 |
| 2026-06-01 12:00 |
19:48:51.31 |
-28:25:10.6 |
HIP 97505 |
3.09 |
| 2026-06-02 00:00 |
19:48:43.44 |
-28:25:57.5 |
HIP 97505 |
4.95 |
| 2026-06-02 12:00 |
19:48:35.47 |
-28:26:44.5 |
HIP 97505 |
6.85 |
| 2026-06-03 00:00 |
19:48:27.39 |
-28:27:31.5 |
HIP 97505 |
8.79 |
| 2026-06-03 12:00 |
19:48:19.21 |
-28:28:18.7 |
HIP 97401 |
6.90 |
| 2026-06-04 00:00 |
19:48:10.92 |
-28:29:05.9 |
HIP 97401 |
4.99 |
| 2026-06-04 12:00 |
19:48:02.52 |
-28:29:53.2 |
HIP 97401 |
3.16 |
| 2026-06-05 00:00 |
19:47:54.03 |
-28:30:40.5 |
HIP 97401 |
1.75 |
| 2026-06-05 12:00 |
19:47:45.43 |
-28:31:27.9 |
HIP 97401 |
2.09 |
| 2026-06-06 00:00 |
19:47:36.73 |
-28:32:15.4 |
HIP 97401 |
3.76 |
| 2026-06-06 12:00 |
19:47:27.92 |
-28:33:02.9 |
HIP 97401 |
5.72 |
| 2026-06-07 00:00 |
19:47:19.02 |
-28:33:50.5 |
HIP 97401 |
7.77 |
| 2026-06-07 12:00 |
19:47:10.02 |
-28:34:38.1 |
HIP 97401 |
9.86 |
| 2026-06-08 00:00 |
19:47:00.92 |
-28:35:25.7 |
HIP 97401 |
11.98 |
| 2026-06-08 12:00 |
19:46:51.72 |
-28:36:13.4 |
HIP 97401 |
14.13 |
| 2026-06-09 00:00 |
19:46:42.43 |
-28:37:01.1 |
HIP 97401 |
16.31 |
| 2026-06-09 12:00 |
19:46:33.03 |
-28:37:48.8 |
HIP 97401 |
18.50 |
| 2026-06-10 00:00 |
19:46:23.55 |
-28:38:36.5 |
HIP 97401 |
20.72 |
| 2026-06-10 12:00 |
19:46:13.97 |
-28:39:24.2 |
HIP 97401 |
22.96 |
| 2026-06-11 00:00 |
19:46:04.29 |
-28:40:11.9 |
HIP 97401 |
25.22 |
| 2026-06-11 12:00 |
19:45:54.53 |
-28:40:59.6 |
HIP 97191 |
27.37 |
| 2026-06-12 00:00 |
19:45:44.67 |
-28:41:47.4 |
HIP 97191 |
25.97 |
| 2026-06-12 12:00 |
19:45:34.73 |
-28:42:35.1 |
HIP 97191 |
24.69 |
| 2026-06-13 00:00 |
19:45:24.69 |
-28:43:22.7 |
HIP 97191 |
23.57 |
| 2026-06-13 12:00 |
19:45:14.57 |
-28:44:10.4 |
HIP 97191 |
22.64 |
| 2026-06-14 00:00 |
19:45:04.36 |
-28:44:58.0 |
HIP 97191 |
21.93 |
| 2026-06-14 12:00 |
19:44:54.06 |
-28:45:45.6 |
HIP 97191 |
21.46 |
| 2026-06-15 00:00 |
19:44:43.68 |
-28:46:33.1 |
HIP 97191 |
21.25 |
| 2026-06-15 12:00 |
19:44:33.21 |
-28:47:20.5 |
HIP 97191 |
21.33 |
| 2026-06-16 00:00 |
19:44:22.67 |
-28:48:08.0 |
HIP 97191 |
21.68 |
| 2026-06-16 12:00 |
19:44:12.04 |
-28:48:55.3 |
HIP 97191 |
22.31 |
| 2026-06-17 00:00 |
19:44:01.33 |
-28:49:42.6 |
HIP 97191 |
23.20 |
| 2026-06-17 12:00 |
19:43:50.55 |
-28:50:29.8 |
HIP 97191 |
24.32 |
| 2026-06-18 00:00 |
19:43:39.69 |
-28:51:16.9 |
HIP 96899 |
23.84 |
| 2026-06-18 12:00 |
19:43:28.75 |
-28:52:04.0 |
HIP 96899 |
21.46 |
| 2026-06-19 00:00 |
19:43:17.74 |
-28:52:50.9 |
HIP 96899 |
19.11 |
| 2026-06-19 12:00 |
19:43:06.65 |
-28:53:37.7 |
HIP 96899 |
16.79 |
| 2026-06-20 00:00 |
19:42:55.50 |
-28:54:24.5 |
HIP 96899 |
14.54 |
| 2026-06-20 12:00 |
19:42:44.27 |
-28:55:11.1 |
HIP 96899 |
12.39 |
| 2026-06-21 00:00 |
19:42:32.98 |
-28:55:57.6 |
HIP 96899 |
10.42 |
| 2026-06-21 12:00 |
19:42:21.61 |
-28:56:44.0 |
HIP 96899 |
8.78 |
| 2026-06-22 00:00 |
19:42:10.18 |
-28:57:30.2 |
HIP 96899 |
7.67 |