C/2012 LP26 (Palomar)
| Parameter |
Value |
| Designation |
C/2012 LP26 (Palomar) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2015-08-16T13:45:24.307200Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:17Z |
| Obs used |
439 |
| NEO |
- |
| M1 |
9.400 |
| K1 |
6.250 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2015-10-09.0000000 |
| e |
0.99927976 |
| q (au) |
6.536055 |
| a (au) |
9074.782001 |
| i (deg) |
25.379849 |
| Ω (om, deg) |
153.987248 |
| ω (w, deg) |
145.153210 |
| M (ma, deg) |
0.000061 |
Magnitude
Scatter + Global Linear
$$
M_a = (8.895 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
8.895 |
| n |
2.000 |
| gf |
0.902 |
| gb |
-1.000 |
| k |
1.000 |
| δ90 |
9.636 |
| 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 |
03:34:53.09 |
-06:32:17.2 |
HIP 16653 |
9.29 |
| 2026-02-03 12:00 |
03:34:52.87 |
-06:31:44.1 |
HIP 16653 |
9.19 |
| 2026-02-04 00:00 |
03:34:52.69 |
-06:31:10.8 |
HIP 16653 |
9.13 |
| 2026-02-04 12:00 |
03:34:52.56 |
-06:30:37.3 |
HIP 16653 |
9.12 |
| 2026-02-05 00:00 |
03:34:52.47 |
-06:30:03.6 |
HIP 16653 |
9.15 |
| 2026-02-05 12:00 |
03:34:52.43 |
-06:29:29.8 |
HIP 16653 |
9.23 |
| 2026-02-06 00:00 |
03:34:52.44 |
-06:28:55.8 |
HIP 16653 |
9.36 |
| 2026-02-06 12:00 |
03:34:52.49 |
-06:28:21.6 |
HIP 16653 |
9.53 |
| 2026-02-07 00:00 |
03:34:52.58 |
-06:27:47.3 |
HIP 16653 |
9.74 |
| 2026-02-07 12:00 |
03:34:52.72 |
-06:27:12.8 |
HIP 16653 |
9.99 |
| 2026-02-08 00:00 |
03:34:52.91 |
-06:26:38.1 |
HIP 16653 |
10.28 |
| 2026-02-08 12:00 |
03:34:53.14 |
-06:26:03.3 |
HIP 16653 |
10.60 |
| 2026-02-09 00:00 |
03:34:53.42 |
-06:25:28.3 |
HIP 16653 |
10.96 |
| 2026-02-09 12:00 |
03:34:53.74 |
-06:24:53.2 |
HIP 16653 |
11.34 |
| 2026-02-10 00:00 |
03:34:54.11 |
-06:24:17.9 |
HIP 16653 |
11.76 |
| 2026-02-10 12:00 |
03:34:54.52 |
-06:23:42.5 |
HIP 16653 |
12.19 |
| 2026-02-11 00:00 |
03:34:54.98 |
-06:23:07.0 |
HIP 16653 |
12.66 |
| 2026-02-11 12:00 |
03:34:55.48 |
-06:22:31.3 |
HIP 16653 |
13.14 |
| 2026-02-12 00:00 |
03:34:56.03 |
-06:21:55.4 |
HIP 16653 |
13.64 |
| 2026-02-12 12:00 |
03:34:56.62 |
-06:21:19.4 |
HIP 16653 |
14.16 |
| 2026-02-13 00:00 |
03:34:57.26 |
-06:20:43.3 |
HIP 16653 |
14.70 |
| 2026-02-13 12:00 |
03:34:57.95 |
-06:20:07.1 |
HIP 16653 |
15.26 |
| 2026-02-14 00:00 |
03:34:58.68 |
-06:19:30.7 |
HIP 16653 |
15.83 |
| 2026-02-14 12:00 |
03:34:59.45 |
-06:18:54.3 |
HIP 16653 |
16.41 |
| 2026-02-15 00:00 |
03:35:00.27 |
-06:18:17.6 |
HIP 16653 |
17.00 |
| 2026-02-15 12:00 |
03:35:01.14 |
-06:17:40.9 |
HIP 16653 |
17.61 |
| 2026-02-16 00:00 |
03:35:02.05 |
-06:17:04.1 |
HIP 16653 |
18.23 |
| 2026-02-16 12:00 |
03:35:03.00 |
-06:16:27.1 |
HIP 16653 |
18.86 |
| 2026-02-17 00:00 |
03:35:04.00 |
-06:15:50.1 |
HIP 16653 |
19.50 |
| 2026-02-17 12:00 |
03:35:05.05 |
-06:15:12.9 |
HIP 16653 |
20.15 |
| 2026-02-18 00:00 |
03:35:06.14 |
-06:14:35.6 |
HIP 16653 |
20.81 |
| 2026-02-18 12:00 |
03:35:07.27 |
-06:13:58.2 |
HIP 16653 |
21.47 |
| 2026-02-19 00:00 |
03:35:08.45 |
-06:13:20.8 |
HIP 16653 |
22.15 |
| 2026-02-19 12:00 |
03:35:09.67 |
-06:12:43.2 |
HIP 16653 |
22.84 |
| 2026-02-20 00:00 |
03:35:10.94 |
-06:12:05.6 |
HIP 16653 |
23.53 |
| 2026-02-20 12:00 |
03:35:12.25 |
-06:11:27.8 |
HIP 16653 |
24.23 |
| 2026-02-21 00:00 |
03:35:13.61 |
-06:10:50.0 |
HIP 16653 |
24.94 |
| 2026-02-21 12:00 |
03:35:15.01 |
-06:10:12.1 |
HIP 16653 |
25.66 |
| 2026-02-22 00:00 |
03:35:16.45 |
-06:09:34.1 |
HIP 16653 |
26.38 |
| 2026-02-22 12:00 |
03:35:17.94 |
-06:08:56.0 |
HIP 16653 |
27.11 |
| 2026-02-23 00:00 |
03:35:19.47 |
-06:08:17.9 |
HIP 16653 |
27.85 |
| 2026-02-23 12:00 |
03:35:21.04 |
-06:07:39.7 |
HIP 16653 |
28.60 |
| 2026-02-24 00:00 |
03:35:22.66 |
-06:07:01.4 |
HIP 16653 |
29.35 |