| Parameter |
Value |
| Designation |
C/2014 W10 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2016-02-17T17:05:45.709440Z |
| Orbit solution date (soln_date, UTC) |
2022-07-16T01:42:20Z |
| Obs used |
28 |
| NEO |
- |
| M1 |
7.100 |
| K1 |
10.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2014-09-22.0000000 |
| e |
1.00362111 |
| q (au) |
7.656557 |
| a (au) |
-2114.420080 |
| i (deg) |
83.309348 |
| Ω (om, deg) |
43.245415 |
| ω (w, deg) |
42.337209 |
| M (ma, deg) |
-0.005208 |
Magnitude
Scatter + Global Linear
$$
M_a = (1.984 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
1.984 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.998 |
| k |
1.000 |
| δ90 |
9.999 |
| 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) |
| 2026-09-25 00:00 |
14:57:55.27 |
+13:13:49.2 |
HIP 73141 |
16.57 |
| 2026-09-25 12:00 |
14:57:58.80 |
+13:12:54.8 |
HIP 73272 |
16.80 |
| 2026-09-26 00:00 |
14:58:02.37 |
+13:12:00.4 |
HIP 73272 |
15.60 |
| 2026-09-26 12:00 |
14:58:05.96 |
+13:11:06.3 |
HIP 73272 |
14.40 |
| 2026-09-27 00:00 |
14:58:09.58 |
+13:10:12.3 |
HIP 73272 |
13.21 |
| 2026-09-27 12:00 |
14:58:13.23 |
+13:09:18.4 |
HIP 73272 |
12.03 |
| 2026-09-28 00:00 |
14:58:16.91 |
+13:08:24.7 |
HIP 73272 |
10.88 |
| 2026-09-28 12:00 |
14:58:20.61 |
+13:07:31.2 |
HIP 73272 |
9.75 |
| 2026-09-29 00:00 |
14:58:24.34 |
+13:06:37.8 |
HIP 73272 |
8.67 |
| 2026-09-29 12:00 |
14:58:28.10 |
+13:05:44.6 |
HIP 73272 |
7.64 |
| 2026-09-30 00:00 |
14:58:31.88 |
+13:04:51.5 |
HIP 73272 |
6.71 |
| 2026-09-30 12:00 |
14:58:35.69 |
+13:03:58.6 |
HIP 73272 |
5.90 |
| 2026-10-01 00:00 |
14:58:39.52 |
+13:03:05.9 |
HIP 73272 |
5.30 |
| 2026-10-01 12:00 |
14:58:43.38 |
+13:02:13.4 |
HIP 73272 |
4.96 |
| 2026-10-02 00:00 |
14:58:47.27 |
+13:01:21.0 |
HIP 73272 |
4.95 |
| 2026-10-02 12:00 |
14:58:51.18 |
+13:00:28.8 |
HIP 73272 |
5.27 |
| 2026-10-03 00:00 |
14:58:55.11 |
+12:59:36.8 |
HIP 73272 |
5.87 |
| 2026-10-03 12:00 |
14:58:59.07 |
+12:58:45.0 |
HIP 73272 |
6.68 |
| 2026-10-04 00:00 |
14:59:03.06 |
+12:57:53.4 |
HIP 73272 |
7.63 |
| 2026-10-04 12:00 |
14:59:07.07 |
+12:57:02.0 |
HIP 73272 |
8.67 |
| 2026-10-05 00:00 |
14:59:11.10 |
+12:56:10.7 |
HIP 73272 |
9.79 |
| 2026-10-05 12:00 |
14:59:15.16 |
+12:55:19.6 |
HIP 73272 |
10.94 |
| 2026-10-06 00:00 |
14:59:19.24 |
+12:54:28.8 |
HIP 73272 |
12.14 |
| 2026-10-06 12:00 |
14:59:23.34 |
+12:53:38.1 |
HIP 73272 |
13.35 |
| 2026-10-07 00:00 |
14:59:27.46 |
+12:52:47.6 |
HIP 73272 |
14.59 |
| 2026-10-07 12:00 |
14:59:31.61 |
+12:51:57.4 |
HIP 73272 |
15.85 |
| 2026-10-08 00:00 |
14:59:35.78 |
+12:51:07.3 |
HIP 73272 |
17.11 |
| 2026-10-08 12:00 |
14:59:39.97 |
+12:50:17.5 |
HIP 73272 |
18.39 |
| 2026-10-09 00:00 |
14:59:44.19 |
+12:49:27.8 |
HIP 73272 |
19.67 |
| 2026-10-09 12:00 |
14:59:48.42 |
+12:48:38.4 |
HIP 73272 |
20.96 |
| 2026-10-10 00:00 |
14:59:52.68 |
+12:47:49.2 |
HIP 73437 |
20.73 |
| 2026-10-10 12:00 |
14:59:56.95 |
+12:47:00.2 |
HIP 73437 |
19.60 |
| 2026-10-11 00:00 |
15:00:01.25 |
+12:46:11.4 |
HIP 73437 |
18.49 |
| 2026-10-11 12:00 |
15:00:05.56 |
+12:45:22.9 |
HIP 73437 |
17.42 |
| 2026-10-12 00:00 |
15:00:09.90 |
+12:44:34.6 |
HIP 73437 |
16.39 |
| 2026-10-12 12:00 |
15:00:14.25 |
+12:43:46.5 |
HIP 73437 |
15.41 |
| 2026-10-13 00:00 |
15:00:18.63 |
+12:42:58.6 |
HIP 73437 |
14.48 |
| 2026-10-13 12:00 |
15:00:23.02 |
+12:42:11.0 |
HIP 73437 |
13.63 |
| 2026-10-14 00:00 |
15:00:27.43 |
+12:41:23.6 |
HIP 73437 |
12.87 |
| 2026-10-14 12:00 |
15:00:31.86 |
+12:40:36.4 |
HIP 73437 |
12.21 |
| 2026-10-15 00:00 |
15:00:36.30 |
+12:39:49.5 |
HIP 73437 |
11.66 |
| 2026-10-15 12:00 |
15:00:40.77 |
+12:39:02.8 |
HIP 73437 |
11.26 |
| 2026-10-16 00:00 |
15:00:45.25 |
+12:38:16.3 |
HIP 73437 |
11.02 |