| 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) |
| 2026-09-25 00:00 |
08:32:17.07 |
-65:02:05.1 |
HIP 42188 |
27.83 |
| 2026-09-25 12:00 |
08:32:24.79 |
-65:03:00.4 |
HIP 42188 |
27.57 |
| 2026-09-26 00:00 |
08:32:32.45 |
-65:03:56.0 |
HIP 42188 |
27.38 |
| 2026-09-26 12:00 |
08:32:40.03 |
-65:04:51.8 |
HIP 42188 |
27.24 |
| 2026-09-27 00:00 |
08:32:47.54 |
-65:05:48.0 |
HIP 41800 |
27.10 |
| 2026-09-27 12:00 |
08:32:54.97 |
-65:06:44.4 |
HIP 41800 |
26.48 |
| 2026-09-28 00:00 |
08:33:02.33 |
-65:07:41.2 |
HIP 41800 |
25.91 |
| 2026-09-28 12:00 |
08:33:09.61 |
-65:08:38.2 |
HIP 41800 |
25.37 |
| 2026-09-29 00:00 |
08:33:16.81 |
-65:09:35.5 |
HIP 41800 |
24.87 |
| 2026-09-29 12:00 |
08:33:23.94 |
-65:10:33.1 |
HIP 41800 |
24.41 |
| 2026-09-30 00:00 |
08:33:30.99 |
-65:11:30.9 |
HIP 41800 |
24.00 |
| 2026-09-30 12:00 |
08:33:37.97 |
-65:12:29.0 |
HIP 41800 |
23.63 |
| 2026-10-01 00:00 |
08:33:44.86 |
-65:13:27.4 |
HIP 41800 |
23.31 |
| 2026-10-01 12:00 |
08:33:51.68 |
-65:14:26.0 |
HIP 41800 |
23.04 |
| 2026-10-02 00:00 |
08:33:58.41 |
-65:15:24.9 |
HIP 41800 |
22.82 |
| 2026-10-02 12:00 |
08:34:05.07 |
-65:16:24.1 |
HIP 41800 |
22.66 |
| 2026-10-03 00:00 |
08:34:11.65 |
-65:17:23.5 |
HIP 41800 |
22.54 |
| 2026-10-03 12:00 |
08:34:18.14 |
-65:18:23.1 |
HIP 41800 |
22.49 |
| 2026-10-04 00:00 |
08:34:24.56 |
-65:19:23.0 |
HIP 41800 |
22.48 |
| 2026-10-04 12:00 |
08:34:30.89 |
-65:20:23.1 |
HIP 41800 |
22.53 |
| 2026-10-05 00:00 |
08:34:37.14 |
-65:21:23.5 |
HIP 41800 |
22.63 |
| 2026-10-05 12:00 |
08:34:43.31 |
-65:22:24.1 |
HIP 41800 |
22.79 |
| 2026-10-06 00:00 |
08:34:49.39 |
-65:23:24.9 |
HIP 41800 |
22.99 |
| 2026-10-06 12:00 |
08:34:55.39 |
-65:24:25.9 |
HIP 41800 |
23.25 |
| 2026-10-07 00:00 |
08:35:01.31 |
-65:25:27.1 |
HIP 41859 |
23.42 |
| 2026-10-07 12:00 |
08:35:07.14 |
-65:26:28.6 |
HIP 41859 |
23.27 |
| 2026-10-08 00:00 |
08:35:12.88 |
-65:27:30.3 |
HIP 41859 |
23.17 |
| 2026-10-08 12:00 |
08:35:18.54 |
-65:28:32.1 |
HIP 41859 |
23.13 |
| 2026-10-09 00:00 |
08:35:24.11 |
-65:29:34.2 |
HIP 41859 |
23.13 |
| 2026-10-09 12:00 |
08:35:29.60 |
-65:30:36.5 |
HIP 41859 |
23.19 |
| 2026-10-10 00:00 |
08:35:35.00 |
-65:31:38.9 |
HIP 41859 |
23.29 |
| 2026-10-10 12:00 |
08:35:40.31 |
-65:32:41.6 |
HIP 41859 |
23.45 |
| 2026-10-11 00:00 |
08:35:45.53 |
-65:33:44.4 |
HIP 41859 |
23.65 |
| 2026-10-11 12:00 |
08:35:50.66 |
-65:34:47.4 |
HIP 41859 |
23.90 |
| 2026-10-12 00:00 |
08:35:55.70 |
-65:35:50.5 |
HIP 41859 |
24.19 |
| 2026-10-12 12:00 |
08:36:00.66 |
-65:36:53.9 |
HIP 41859 |
24.52 |
| 2026-10-13 00:00 |
08:36:05.52 |
-65:37:57.3 |
HIP 41859 |
24.90 |
| 2026-10-13 12:00 |
08:36:10.29 |
-65:39:01.0 |
HIP 41859 |
25.31 |
| 2026-10-14 00:00 |
08:36:14.98 |
-65:40:04.8 |
HIP 41859 |
25.76 |
| 2026-10-14 12:00 |
08:36:19.57 |
-65:41:08.7 |
HIP 41859 |
26.24 |
| 2026-10-15 00:00 |
08:36:24.07 |
-65:42:12.8 |
HIP 41859 |
26.76 |
| 2026-10-15 12:00 |
08:36:28.48 |
-65:43:17.0 |
HIP 41859 |
27.31 |
| 2026-10-16 00:00 |
08:36:32.79 |
-65:44:21.3 |
HIP 41859 |
27.88 |