| Parameter |
Value |
| Designation |
316P/LONEOS-Christensen |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2006-11-07T01:27:06.275520Z |
| Orbit solution date (soln_date, UTC) |
2025-04-09T13:45:33Z |
| Obs used |
128 |
| NEO |
- |
| M1 |
15.100 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2017-01-26T12:54:38.016000Z |
| Discovery magnitude (MPC) |
21.00 z |
| Discovery observatory (MPC) |
T09 · Subaru Telescope, Maunakea |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2007-09-04.0000000 |
| e |
0.16637404 |
| q (au) |
3.606774 |
| a (au) |
4.326609 |
| i (deg) |
9.882930 |
| Ω (om, deg) |
246.930761 |
| ω (w, deg) |
191.667732 |
| M (ma, deg) |
32.958072 |
Magnitude
Scatter + Global Linear
$$
M_a = (16.818 + 4.167\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
16.818 |
| n |
4.167 |
| gf |
0.999 |
| gb |
-0.779 |
| k |
0.800 |
| 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) |
| 2026-09-20 00:00 |
11:07:05.34 |
-02:53:02.1 |
HIP 54489 |
28.79 |
| 2026-09-20 12:00 |
11:07:35.10 |
-02:56:13.3 |
HIP 54489 |
23.58 |
| 2026-09-21 00:00 |
11:08:04.83 |
-02:59:24.7 |
HIP 54489 |
20.36 |
| 2026-09-21 12:00 |
11:08:34.54 |
-03:02:36.2 |
HIP 54546 |
17.59 |
| 2026-09-22 00:00 |
11:09:04.22 |
-03:05:47.9 |
HIP 54546 |
11.65 |
| 2026-09-22 12:00 |
11:09:33.87 |
-03:08:59.8 |
HIP 54546 |
9.62 |
| 2026-09-23 00:00 |
11:10:03.50 |
-03:12:11.9 |
HIP 54546 |
13.40 |
| 2026-09-23 12:00 |
11:10:33.09 |
-03:15:24.1 |
HIP 54546 |
19.90 |
| 2026-09-24 00:00 |
11:11:02.66 |
-03:18:36.4 |
HIP 54546 |
27.24 |
| 2026-09-24 12:00 |
11:11:32.20 |
-03:21:48.9 |
HIP 54546 |
34.89 |
| 2026-09-25 00:00 |
11:12:01.71 |
-03:25:01.6 |
HIP 54781 |
28.41 |
| 2026-09-25 12:00 |
11:12:31.19 |
-03:28:14.4 |
HIP 54781 |
22.59 |
| 2026-09-26 00:00 |
11:13:00.64 |
-03:31:27.3 |
HIP 54781 |
18.50 |
| 2026-09-26 12:00 |
11:13:30.06 |
-03:34:40.4 |
HIP 54781 |
17.40 |
| 2026-09-27 00:00 |
11:13:59.45 |
-03:37:53.6 |
HIP 54781 |
19.77 |
| 2026-09-27 12:00 |
11:14:28.80 |
-03:41:07.0 |
HIP 54781 |
24.64 |
| 2026-09-28 00:00 |
11:14:58.13 |
-03:44:20.4 |
HIP 55057 |
19.68 |
| 2026-09-28 12:00 |
11:15:27.42 |
-03:47:34.0 |
HIP 55057 |
12.46 |
| 2026-09-29 00:00 |
11:15:56.68 |
-03:50:47.7 |
HIP 55057 |
7.16 |
| 2026-09-29 12:00 |
11:16:25.90 |
-03:54:01.5 |
HIP 55081 |
4.77 |
| 2026-09-30 00:00 |
11:16:55.10 |
-03:57:15.4 |
HIP 55090 |
2.70 |
| 2026-09-30 12:00 |
11:17:24.26 |
-04:00:29.5 |
HIP 55090 |
10.63 |
| 2026-10-01 00:00 |
11:17:53.38 |
-04:03:43.6 |
HIP 55090 |
18.58 |
| 2026-10-01 12:00 |
11:18:22.47 |
-04:06:57.8 |
HIP 55090 |
26.52 |
| 2026-10-02 00:00 |
11:18:51.52 |
-04:10:12.1 |
HIP 55426 |
34.04 |
| 2026-10-02 12:00 |
11:19:20.54 |
-04:13:26.6 |
HIP 55426 |
28.64 |
| 2026-10-03 00:00 |
11:19:49.52 |
-04:16:41.1 |
HIP 55443 |
22.28 |
| 2026-10-03 12:00 |
11:20:18.47 |
-04:19:55.6 |
HIP 55443 |
14.57 |
| 2026-10-04 00:00 |
11:20:47.37 |
-04:23:10.3 |
HIP 55443 |
7.32 |
| 2026-10-04 12:00 |
11:21:16.24 |
-04:26:25.0 |
HIP 55443 |
4.44 |
| 2026-10-05 00:00 |
11:21:45.07 |
-04:29:39.8 |
HIP 55443 |
10.51 |
| 2026-10-05 12:00 |
11:22:13.86 |
-04:32:54.7 |
HIP 55443 |
18.03 |
| 2026-10-06 00:00 |
11:22:42.61 |
-04:36:09.6 |
HIP 55443 |
25.76 |
| 2026-10-06 12:00 |
11:23:11.32 |
-04:39:24.5 |
HIP 55727 |
28.89 |
| 2026-10-07 00:00 |
11:23:39.99 |
-04:42:39.5 |
HIP 55727 |
22.77 |
| 2026-10-07 12:00 |
11:24:08.61 |
-04:45:54.6 |
HIP 55727 |
18.05 |
| 2026-10-08 00:00 |
11:24:37.20 |
-04:49:09.7 |
HIP 55727 |
16.00 |
| 2026-10-08 12:00 |
11:25:05.73 |
-04:52:24.8 |
HIP 55727 |
17.58 |
| 2026-10-09 00:00 |
11:25:34.23 |
-04:55:39.9 |
HIP 55727 |
22.01 |
| 2026-10-09 12:00 |
11:26:02.68 |
-04:58:55.0 |
HIP 55727 |
27.95 |
| 2026-10-10 00:00 |
11:26:31.08 |
-05:02:10.2 |
HIP 55727 |
34.63 |
| 2026-10-10 12:00 |
11:26:59.44 |
-05:05:25.4 |
HIP 55727 |
41.68 |
| 2026-10-11 00:00 |
11:27:27.75 |
-05:08:40.5 |
HIP 55727 |
48.95 |