| Parameter |
Value |
| Designation |
301P/LINEAR-NEAT |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2001-01-30T16:28:03.817920Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:28:17Z |
| Obs used |
126 |
| NEO |
- |
| M1 |
10.900 |
| K1 |
16.250 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2003-02-05.0000000 |
| e |
0.58742378 |
| q (au) |
2.346309 |
| a (au) |
5.686971 |
| i (deg) |
10.618305 |
| Ω (om, deg) |
355.783208 |
| ω (w, deg) |
189.400943 |
| M (ma, deg) |
53.438629 |
Magnitude
Scatter + Global Linear
$$
M_a = (11.907 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
11.907 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
0.971 |
| δ90 |
1.000 |
| 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) |
| 2026-07-29 00:00 |
04:52:58.97 |
+31:35:26.1 |
HIP 22662 |
24.66 |
| 2026-07-29 12:00 |
04:53:23.51 |
+31:36:40.3 |
HIP 22662 |
25.43 |
| 2026-07-30 00:00 |
04:53:47.98 |
+31:37:54.4 |
HIP 22662 |
27.25 |
| 2026-07-30 12:00 |
04:54:12.37 |
+31:39:08.4 |
HIP 22662 |
29.91 |
| 2026-07-31 00:00 |
04:54:36.69 |
+31:40:22.4 |
HIP 22894 |
30.91 |
| 2026-07-31 12:00 |
04:55:00.94 |
+31:41:36.3 |
HIP 22894 |
28.28 |
| 2026-08-01 00:00 |
04:55:25.10 |
+31:42:50.2 |
HIP 22894 |
26.46 |
| 2026-08-01 12:00 |
04:55:49.19 |
+31:44:04.1 |
HIP 22894 |
25.62 |
| 2026-08-02 00:00 |
04:56:13.20 |
+31:45:17.9 |
HIP 22894 |
25.83 |
| 2026-08-02 12:00 |
04:56:37.13 |
+31:46:31.6 |
HIP 22894 |
27.06 |
| 2026-08-03 00:00 |
04:57:00.98 |
+31:47:45.4 |
HIP 22894 |
29.18 |
| 2026-08-03 12:00 |
04:57:24.75 |
+31:48:59.0 |
HIP 23205 |
31.30 |
| 2026-08-04 00:00 |
04:57:48.43 |
+31:50:12.7 |
HIP 23205 |
27.53 |
| 2026-08-04 12:00 |
04:58:12.03 |
+31:51:26.3 |
HIP 23205 |
24.30 |
| 2026-08-05 00:00 |
04:58:35.55 |
+31:52:39.8 |
HIP 23205 |
21.84 |
| 2026-08-05 12:00 |
04:58:58.98 |
+31:53:53.3 |
HIP 23205 |
20.41 |
| 2026-08-06 00:00 |
04:59:22.32 |
+31:55:06.8 |
HIP 23205 |
20.23 |
| 2026-08-06 12:00 |
04:59:45.58 |
+31:56:20.3 |
HIP 23205 |
21.31 |
| 2026-08-07 00:00 |
05:00:08.74 |
+31:57:33.7 |
HIP 23400 |
23.32 |
| 2026-08-07 12:00 |
05:00:31.82 |
+31:58:47.1 |
HIP 23400 |
19.84 |
| 2026-08-08 00:00 |
05:00:54.80 |
+32:00:00.4 |
HIP 23400 |
17.18 |
| 2026-08-08 12:00 |
05:01:17.69 |
+32:01:13.8 |
HIP 23400 |
15.73 |
| 2026-08-09 00:00 |
05:01:40.49 |
+32:02:27.1 |
HIP 23400 |
15.80 |
| 2026-08-09 12:00 |
05:02:03.19 |
+32:03:40.3 |
HIP 23400 |
17.37 |
| 2026-08-10 00:00 |
05:02:25.79 |
+32:04:53.6 |
HIP 23400 |
20.07 |
| 2026-08-10 12:00 |
05:02:48.30 |
+32:06:06.8 |
HIP 23557 |
21.84 |
| 2026-08-11 00:00 |
05:03:10.70 |
+32:07:20.0 |
HIP 23557 |
18.09 |
| 2026-08-11 12:00 |
05:03:33.01 |
+32:08:33.2 |
HIP 23557 |
15.03 |
| 2026-08-12 00:00 |
05:03:55.21 |
+32:09:46.3 |
HIP 23611 |
12.93 |
| 2026-08-12 12:00 |
05:04:17.31 |
+32:10:59.5 |
HIP 23611 |
9.22 |
| 2026-08-13 00:00 |
05:04:39.31 |
+32:12:12.6 |
HIP 23611 |
7.03 |
| 2026-08-13 12:00 |
05:05:01.20 |
+32:13:25.7 |
HIP 23611 |
7.74 |
| 2026-08-14 00:00 |
05:05:22.99 |
+32:14:38.8 |
HIP 23611 |
10.76 |
| 2026-08-14 12:00 |
05:05:44.67 |
+32:15:51.9 |
HIP 23611 |
14.71 |
| 2026-08-15 00:00 |
05:06:06.23 |
+32:17:04.9 |
HIP 23611 |
18.99 |
| 2026-08-15 12:00 |
05:06:27.69 |
+32:18:18.0 |
HIP 23611 |
23.42 |
| 2026-08-16 00:00 |
05:06:49.04 |
+32:19:31.0 |
HIP 23611 |
27.91 |
| 2026-08-16 12:00 |
05:07:10.28 |
+32:20:44.0 |
HIP 23850 |
25.74 |
| 2026-08-17 00:00 |
05:07:31.40 |
+32:21:57.0 |
HIP 23850 |
23.93 |
| 2026-08-17 12:00 |
05:07:52.41 |
+32:23:10.1 |
HIP 23850 |
22.91 |
| 2026-08-18 00:00 |
05:08:13.30 |
+32:24:23.1 |
HIP 23850 |
22.78 |
| 2026-08-18 12:00 |
05:08:34.07 |
+32:25:36.1 |
HIP 23850 |
23.54 |
| 2026-08-19 00:00 |
05:08:54.73 |
+32:26:49.1 |
HIP 23850 |
25.09 |