241P/LINEAR
| Parameter |
Value |
| Designation |
241P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2010-07-17T08:34:46.513920Z |
| Orbit solution date (soln_date, UTC) |
2022-05-06T00:43:04Z |
| Obs used |
874 |
| NEO |
- |
| M1 |
14.300 |
| K1 |
7.250 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2015-01-18.0000000 |
| e |
0.60991749 |
| q (au) |
1.932371 |
| a (au) |
4.953749 |
| i (deg) |
20.868312 |
| Ω (om, deg) |
305.806635 |
| ω (w, deg) |
110.525675 |
| M (ma, deg) |
147.108792 |
Magnitude
Scatter + Global Linear
$$
M_a = (12.777 + 3.761\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
12.777 |
| n |
3.761 |
| gf |
1.000 |
| gb |
-0.932 |
| k |
1.000 |
| 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
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
15:10:01.07 |
-38:47:01.8 |
HIP 74224 |
1.33 |
| 2026-02-03 12:00 |
15:10:07.30 |
-38:48:37.5 |
HIP 74224 |
1.08 |
| 2026-02-04 00:00 |
15:10:13.38 |
-38:50:12.9 |
HIP 74224 |
2.92 |
| 2026-02-04 12:00 |
15:10:19.31 |
-38:51:48.1 |
HIP 74224 |
4.85 |
| 2026-02-05 00:00 |
15:10:25.10 |
-38:53:22.9 |
HIP 74224 |
6.78 |
| 2026-02-05 12:00 |
15:10:30.74 |
-38:54:57.5 |
HIP 74224 |
8.70 |
| 2026-02-06 00:00 |
15:10:36.23 |
-38:56:31.8 |
HIP 74224 |
10.60 |
| 2026-02-06 12:00 |
15:10:41.57 |
-38:58:05.8 |
HIP 74224 |
12.48 |
| 2026-02-07 00:00 |
15:10:46.76 |
-38:59:39.5 |
HIP 74224 |
14.34 |
| 2026-02-07 12:00 |
15:10:51.80 |
-39:01:13.0 |
HIP 74224 |
16.17 |
| 2026-02-08 00:00 |
15:10:56.68 |
-39:02:46.1 |
HIP 74224 |
17.99 |
| 2026-02-08 12:00 |
15:11:01.42 |
-39:04:18.8 |
HIP 74224 |
19.79 |
| 2026-02-09 00:00 |
15:11:06.00 |
-39:05:51.3 |
HIP 74360 |
18.24 |
| 2026-02-09 12:00 |
15:11:10.42 |
-39:07:23.4 |
HIP 74360 |
16.48 |
| 2026-02-10 00:00 |
15:11:14.69 |
-39:08:55.2 |
HIP 74360 |
14.74 |
| 2026-02-10 12:00 |
15:11:18.81 |
-39:10:26.7 |
HIP 74360 |
13.02 |
| 2026-02-11 00:00 |
15:11:22.77 |
-39:11:57.8 |
HIP 74360 |
11.32 |
| 2026-02-11 12:00 |
15:11:26.58 |
-39:13:28.6 |
HIP 74360 |
9.64 |
| 2026-02-12 00:00 |
15:11:30.22 |
-39:14:59.0 |
HIP 74360 |
7.97 |
| 2026-02-12 12:00 |
15:11:33.71 |
-39:16:29.0 |
HIP 74360 |
6.33 |
| 2026-02-13 00:00 |
15:11:37.04 |
-39:17:58.7 |
HIP 74360 |
4.70 |
| 2026-02-13 12:00 |
15:11:40.21 |
-39:19:27.9 |
HIP 74360 |
3.10 |
| 2026-02-14 00:00 |
15:11:43.22 |
-39:20:56.8 |
HIP 74360 |
1.53 |
| 2026-02-14 12:00 |
15:11:46.08 |
-39:22:25.3 |
HIP 74360 |
0.40 |
| 2026-02-15 00:00 |
15:11:48.77 |
-39:23:53.4 |
HIP 74360 |
1.70 |
| 2026-02-15 12:00 |
15:11:51.30 |
-39:25:21.1 |
HIP 74360 |
3.23 |
| 2026-02-16 00:00 |
15:11:53.66 |
-39:26:48.4 |
HIP 74360 |
4.75 |
| 2026-02-16 12:00 |
15:11:55.87 |
-39:28:15.3 |
HIP 74360 |
6.26 |
| 2026-02-17 00:00 |
15:11:57.91 |
-39:29:41.7 |
HIP 74360 |
7.75 |
| 2026-02-17 12:00 |
15:11:59.79 |
-39:31:07.7 |
HIP 74308 |
8.29 |
| 2026-02-18 00:00 |
15:12:01.51 |
-39:32:33.3 |
HIP 74308 |
8.84 |
| 2026-02-18 12:00 |
15:12:03.06 |
-39:33:58.4 |
HIP 74308 |
9.55 |
| 2026-02-19 00:00 |
15:12:04.44 |
-39:35:23.0 |
HIP 74308 |
10.39 |
| 2026-02-19 12:00 |
15:12:05.67 |
-39:36:47.2 |
HIP 74308 |
11.31 |
| 2026-02-20 00:00 |
15:12:06.72 |
-39:38:10.9 |
HIP 74308 |
12.30 |
| 2026-02-20 12:00 |
15:12:07.62 |
-39:39:34.2 |
HIP 74308 |
13.34 |
| 2026-02-21 00:00 |
15:12:08.34 |
-39:40:57.0 |
HIP 74308 |
14.41 |
| 2026-02-21 12:00 |
15:12:08.90 |
-39:42:19.2 |
HIP 74295 |
14.97 |
| 2026-02-22 00:00 |
15:12:09.30 |
-39:43:41.0 |
HIP 74295 |
14.21 |
| 2026-02-22 12:00 |
15:12:09.53 |
-39:45:02.3 |
HIP 74295 |
13.51 |
| 2026-02-23 00:00 |
15:12:09.59 |
-39:46:23.0 |
HIP 74295 |
12.89 |
| 2026-02-23 12:00 |
15:12:09.48 |
-39:47:43.3 |
HIP 74402 |
11.62 |
| 2026-02-24 00:00 |
15:12:09.21 |
-39:49:03.0 |
HIP 74402 |
10.33 |