| Parameter |
Value |
| Designation |
224P/LINEAR-NEAT |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2003-09-25T11:44:00.502080Z |
| Orbit solution date (soln_date, UTC) |
2024-05-30T01:12:28Z |
| Obs used |
107 |
| NEO |
- |
| M1 |
13.900 |
| K1 |
18.250 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2006-03-19.0000000 |
| e |
0.43729725 |
| q (au) |
1.896039 |
| a (au) |
3.369521 |
| i (deg) |
14.873572 |
| Ω (om, deg) |
43.265140 |
| ω (w, deg) |
10.938819 |
| M (ma, deg) |
144.293100 |
Magnitude
Scatter + Global Linear
$$
M_a = (16.775 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
16.775 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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) |
| 2026-09-20 00:00 |
16:06:17.69 |
-28:36:42.6 |
HIP 78988 |
21.07 |
| 2026-09-20 12:00 |
16:06:37.26 |
-28:37:16.0 |
HIP 78988 |
17.91 |
| 2026-09-21 00:00 |
16:06:56.99 |
-28:37:49.8 |
HIP 78988 |
15.31 |
| 2026-09-21 12:00 |
16:07:16.87 |
-28:38:24.0 |
HIP 78988 |
13.64 |
| 2026-09-22 00:00 |
16:07:36.91 |
-28:38:58.7 |
HIP 78988 |
13.27 |
| 2026-09-22 12:00 |
16:07:57.11 |
-28:39:33.7 |
HIP 78988 |
14.34 |
| 2026-09-23 00:00 |
16:08:17.46 |
-28:40:09.2 |
HIP 78988 |
16.61 |
| 2026-09-23 12:00 |
16:08:37.97 |
-28:40:45.0 |
HIP 79073 |
17.64 |
| 2026-09-24 00:00 |
16:08:58.63 |
-28:41:21.2 |
HIP 79073 |
18.10 |
| 2026-09-24 12:00 |
16:09:19.44 |
-28:41:57.8 |
HIP 79073 |
19.65 |
| 2026-09-25 00:00 |
16:09:40.40 |
-28:42:34.8 |
HIP 79073 |
22.09 |
| 2026-09-25 12:00 |
16:10:01.51 |
-28:43:12.2 |
HIP 79073 |
25.17 |
| 2026-09-26 00:00 |
16:10:22.78 |
-28:43:49.9 |
HIP 79073 |
28.71 |
| 2026-09-26 12:00 |
16:10:44.19 |
-28:44:28.0 |
HIP 79403 |
25.72 |
| 2026-09-27 00:00 |
16:11:05.75 |
-28:45:06.5 |
HIP 79403 |
21.70 |
| 2026-09-27 12:00 |
16:11:27.46 |
-28:45:45.3 |
HIP 79403 |
18.03 |
| 2026-09-28 00:00 |
16:11:49.31 |
-28:46:24.5 |
HIP 79403 |
14.99 |
| 2026-09-28 12:00 |
16:12:11.31 |
-28:47:04.0 |
HIP 79403 |
13.06 |
| 2026-09-29 00:00 |
16:12:33.45 |
-28:47:43.8 |
HIP 79403 |
12.79 |
| 2026-09-29 12:00 |
16:12:55.74 |
-28:48:24.0 |
HIP 79403 |
14.32 |
| 2026-09-30 00:00 |
16:13:18.17 |
-28:49:04.5 |
HIP 79520 |
14.99 |
| 2026-09-30 12:00 |
16:13:40.74 |
-28:49:45.4 |
HIP 79520 |
13.66 |
| 2026-10-01 00:00 |
16:14:03.45 |
-28:50:26.6 |
HIP 79520 |
14.09 |
| 2026-10-01 12:00 |
16:14:26.31 |
-28:51:08.0 |
HIP 79520 |
16.16 |
| 2026-10-02 00:00 |
16:14:49.30 |
-28:51:49.8 |
HIP 79688 |
15.52 |
| 2026-10-02 12:00 |
16:15:12.43 |
-28:52:31.9 |
HIP 79688 |
11.19 |
| 2026-10-03 00:00 |
16:15:35.71 |
-28:53:14.4 |
HIP 79688 |
7.85 |
| 2026-10-03 12:00 |
16:15:59.12 |
-28:53:57.1 |
HIP 79688 |
7.15 |
| 2026-10-04 00:00 |
16:16:22.67 |
-28:54:40.1 |
HIP 79688 |
9.71 |
| 2026-10-04 12:00 |
16:16:46.35 |
-28:55:23.4 |
HIP 79688 |
13.87 |
| 2026-10-05 00:00 |
16:17:10.17 |
-28:56:06.9 |
HIP 79688 |
18.60 |
| 2026-10-05 12:00 |
16:17:34.13 |
-28:56:50.8 |
HIP 79881 |
22.20 |
| 2026-10-06 00:00 |
16:17:58.22 |
-28:57:34.9 |
HIP 79881 |
21.20 |
| 2026-10-06 12:00 |
16:18:22.44 |
-28:58:19.3 |
HIP 79881 |
21.52 |
| 2026-10-07 00:00 |
16:18:46.79 |
-28:59:04.0 |
HIP 79881 |
23.12 |
| 2026-10-07 12:00 |
16:19:11.28 |
-28:59:48.9 |
HIP 80036 |
21.92 |
| 2026-10-08 00:00 |
16:19:35.90 |
-29:00:34.1 |
HIP 80036 |
19.58 |
| 2026-10-08 12:00 |
16:20:00.65 |
-29:01:19.6 |
HIP 80036 |
18.60 |
| 2026-10-09 00:00 |
16:20:25.52 |
-29:02:05.3 |
HIP 80036 |
19.20 |
| 2026-10-09 12:00 |
16:20:50.53 |
-29:02:51.2 |
HIP 80036 |
21.27 |
| 2026-10-10 00:00 |
16:21:15.66 |
-29:03:37.4 |
HIP 80036 |
24.46 |
| 2026-10-10 12:00 |
16:21:40.92 |
-29:04:23.8 |
HIP 80036 |
28.40 |
| 2026-10-11 00:00 |
16:22:06.30 |
-29:05:10.4 |
HIP 80070 |
32.68 |