C/2013 P3 (Palomar)
| Parameter |
Value |
| Designation |
C/2013 P3 (Palomar) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-11-23T23:00:50.428800Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:38Z |
| Obs used |
492 |
| NEO |
- |
| M1 |
6.400 |
| K1 |
8.000 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2014-09-07.0000000 |
| e |
1.00115594 |
| q (au) |
8.646522 |
| a (au) |
-7480.047055 |
| i (deg) |
93.906204 |
| Ω (om, deg) |
177.275808 |
| ω (w, deg) |
177.190714 |
| M (ma, deg) |
-0.000119 |
Magnitude
Scatter + Global Linear
$$
M_a = (2.034 + 4.864\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
2.034 |
| n |
4.864 |
| gf |
0.997 |
| gb |
-0.942 |
| k |
1.000 |
| δ90 |
9.998 |
| 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) |
| 2026-02-03 00:00 |
07:49:17.09 |
-69:36:07.0 |
HIP 38335 |
12.68 |
| 2026-02-03 12:00 |
07:49:05.34 |
-69:35:34.6 |
HIP 38335 |
13.17 |
| 2026-02-04 00:00 |
07:48:53.64 |
-69:35:01.5 |
HIP 38335 |
13.73 |
| 2026-02-04 12:00 |
07:48:41.99 |
-69:34:27.7 |
HIP 38335 |
14.35 |
| 2026-02-05 00:00 |
07:48:30.40 |
-69:33:53.3 |
HIP 37895 |
13.69 |
| 2026-02-05 12:00 |
07:48:18.87 |
-69:33:18.1 |
HIP 37895 |
12.56 |
| 2026-02-06 00:00 |
07:48:07.39 |
-69:32:42.2 |
HIP 37895 |
11.44 |
| 2026-02-06 12:00 |
07:47:55.98 |
-69:32:05.7 |
HIP 37895 |
10.33 |
| 2026-02-07 00:00 |
07:47:44.62 |
-69:31:28.4 |
HIP 37895 |
9.24 |
| 2026-02-07 12:00 |
07:47:33.32 |
-69:30:50.5 |
HIP 37895 |
8.17 |
| 2026-02-08 00:00 |
07:47:22.09 |
-69:30:11.9 |
HIP 37895 |
7.14 |
| 2026-02-08 12:00 |
07:47:10.92 |
-69:29:32.6 |
HIP 37895 |
6.16 |
| 2026-02-09 00:00 |
07:46:59.82 |
-69:28:52.7 |
HIP 37895 |
5.28 |
| 2026-02-09 12:00 |
07:46:48.78 |
-69:28:12.0 |
HIP 37895 |
4.54 |
| 2026-02-10 00:00 |
07:46:37.81 |
-69:27:30.7 |
HIP 37895 |
4.03 |
| 2026-02-10 12:00 |
07:46:26.91 |
-69:26:48.7 |
HIP 37895 |
3.84 |
| 2026-02-11 00:00 |
07:46:16.08 |
-69:26:06.1 |
HIP 37895 |
4.01 |
| 2026-02-11 12:00 |
07:46:05.33 |
-69:25:22.8 |
HIP 37895 |
4.52 |
| 2026-02-12 00:00 |
07:45:54.64 |
-69:24:38.9 |
HIP 37895 |
5.26 |
| 2026-02-12 12:00 |
07:45:44.03 |
-69:23:54.2 |
HIP 37895 |
6.15 |
| 2026-02-13 00:00 |
07:45:33.49 |
-69:23:09.0 |
HIP 37895 |
7.14 |
| 2026-02-13 12:00 |
07:45:23.03 |
-69:22:23.1 |
HIP 37895 |
8.19 |
| 2026-02-14 00:00 |
07:45:12.64 |
-69:21:36.6 |
HIP 37895 |
9.28 |
| 2026-02-14 12:00 |
07:45:02.34 |
-69:20:49.4 |
HIP 37895 |
10.41 |
| 2026-02-15 00:00 |
07:44:52.11 |
-69:20:01.6 |
HIP 37735 |
11.00 |
| 2026-02-15 12:00 |
07:44:41.97 |
-69:19:13.1 |
HIP 37735 |
11.61 |
| 2026-02-16 00:00 |
07:44:31.91 |
-69:18:24.1 |
HIP 37735 |
12.31 |
| 2026-02-16 12:00 |
07:44:21.92 |
-69:17:34.4 |
HIP 37735 |
13.10 |
| 2026-02-17 00:00 |
07:44:12.03 |
-69:16:44.1 |
HIP 37735 |
13.96 |
| 2026-02-17 12:00 |
07:44:02.22 |
-69:15:53.2 |
HIP 37735 |
14.88 |
| 2026-02-18 00:00 |
07:43:52.49 |
-69:15:01.7 |
HIP 37735 |
15.84 |
| 2026-02-18 12:00 |
07:43:42.85 |
-69:14:09.5 |
HIP 37735 |
16.85 |
| 2026-02-19 00:00 |
07:43:33.31 |
-69:13:16.8 |
HIP 37735 |
17.89 |
| 2026-02-19 12:00 |
07:43:23.84 |
-69:12:23.5 |
HIP 37735 |
18.96 |
| 2026-02-20 00:00 |
07:43:14.47 |
-69:11:29.6 |
HIP 37735 |
20.05 |
| 2026-02-20 12:00 |
07:43:05.20 |
-69:10:35.1 |
HIP 37735 |
21.16 |
| 2026-02-21 00:00 |
07:42:56.01 |
-69:09:40.1 |
HIP 37735 |
22.29 |
| 2026-02-21 12:00 |
07:42:46.91 |
-69:08:44.5 |
HIP 37735 |
23.44 |
| 2026-02-22 00:00 |
07:42:37.91 |
-69:07:48.3 |
HIP 37735 |
24.60 |
| 2026-02-22 12:00 |
07:42:29.01 |
-69:06:51.5 |
HIP 37735 |
25.78 |
| 2026-02-23 00:00 |
07:42:20.20 |
-69:05:54.2 |
HIP 37735 |
26.96 |
| 2026-02-23 12:00 |
07:42:11.48 |
-69:04:56.4 |
HIP 37735 |
28.15 |
| 2026-02-24 00:00 |
07:42:02.87 |
-69:03:58.0 |
HIP 37735 |
29.35 |