| 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 |
-0.981 |
| 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) |
| 2026-03-26 00:00 |
16:51:47.29 |
-28:30:42.8 |
HIP 82647 |
25.17 |
| 2026-03-26 12:00 |
16:51:47.11 |
-28:31:50.1 |
HIP 82647 |
25.52 |
| 2026-03-27 00:00 |
16:51:46.68 |
-28:32:57.2 |
HIP 82647 |
25.96 |
| 2026-03-27 12:00 |
16:51:46.00 |
-28:34:03.9 |
HIP 82647 |
26.49 |
| 2026-03-28 00:00 |
16:51:45.08 |
-28:35:10.4 |
HIP 82647 |
27.11 |
| 2026-03-28 12:00 |
16:51:43.92 |
-28:36:16.7 |
HIP 82647 |
27.80 |
| 2026-03-29 00:00 |
16:51:42.51 |
-28:37:22.6 |
HIP 82647 |
28.57 |
| 2026-03-29 12:00 |
16:51:40.85 |
-28:38:28.3 |
HIP 82647 |
29.40 |
| 2026-03-30 00:00 |
16:51:38.95 |
-28:39:33.6 |
HIP 82647 |
30.30 |
| 2026-03-30 12:00 |
16:51:36.80 |
-28:40:38.7 |
HIP 82647 |
31.27 |
| 2026-03-31 00:00 |
16:51:34.41 |
-28:41:43.4 |
HIP 82647 |
32.29 |
| 2026-03-31 12:00 |
16:51:31.76 |
-28:42:47.9 |
HIP 82647 |
33.36 |
| 2026-04-01 00:00 |
16:51:28.87 |
-28:43:52.0 |
HIP 82647 |
34.48 |
| 2026-04-01 12:00 |
16:51:25.73 |
-28:44:55.8 |
HIP 82647 |
35.66 |
| 2026-04-02 00:00 |
16:51:22.34 |
-28:45:59.3 |
HIP 82326 |
34.94 |
| 2026-04-02 12:00 |
16:51:18.71 |
-28:47:02.5 |
HIP 82326 |
33.67 |
| 2026-04-03 00:00 |
16:51:14.82 |
-28:48:05.3 |
HIP 82326 |
32.36 |
| 2026-04-03 12:00 |
16:51:10.69 |
-28:49:07.8 |
HIP 82326 |
31.01 |
| 2026-04-04 00:00 |
16:51:06.30 |
-28:50:09.9 |
HIP 82326 |
29.62 |
| 2026-04-04 12:00 |
16:51:01.67 |
-28:51:11.7 |
HIP 82326 |
28.20 |
| 2026-04-05 00:00 |
16:50:56.79 |
-28:52:13.1 |
HIP 82326 |
26.74 |
| 2026-04-05 12:00 |
16:50:51.65 |
-28:53:14.2 |
HIP 82326 |
25.24 |
| 2026-04-06 00:00 |
16:50:46.27 |
-28:54:14.9 |
HIP 82326 |
23.70 |
| 2026-04-06 12:00 |
16:50:40.64 |
-28:55:15.2 |
HIP 82326 |
22.11 |
| 2026-04-07 00:00 |
16:50:34.76 |
-28:56:15.1 |
HIP 82326 |
20.49 |
| 2026-04-07 12:00 |
16:50:28.62 |
-28:57:14.7 |
HIP 82326 |
18.83 |
| 2026-04-08 00:00 |
16:50:22.24 |
-28:58:13.8 |
HIP 82326 |
17.12 |
| 2026-04-08 12:00 |
16:50:15.61 |
-28:59:12.5 |
HIP 82326 |
15.37 |
| 2026-04-09 00:00 |
16:50:08.72 |
-29:00:10.9 |
HIP 82326 |
13.58 |
| 2026-04-09 12:00 |
16:50:01.59 |
-29:01:08.8 |
HIP 82326 |
11.74 |
| 2026-04-10 00:00 |
16:49:54.21 |
-29:02:06.3 |
HIP 82326 |
9.87 |
| 2026-04-10 12:00 |
16:49:46.58 |
-29:03:03.4 |
HIP 82326 |
7.95 |
| 2026-04-11 00:00 |
16:49:38.70 |
-29:04:00.0 |
HIP 82326 |
5.99 |
| 2026-04-11 12:00 |
16:49:30.57 |
-29:04:56.2 |
HIP 82326 |
4.00 |
| 2026-04-12 00:00 |
16:49:22.19 |
-29:05:51.9 |
HIP 82326 |
2.01 |
| 2026-04-12 12:00 |
16:49:13.56 |
-29:06:47.2 |
HIP 82326 |
0.75 |
| 2026-04-13 00:00 |
16:49:04.68 |
-29:07:42.0 |
HIP 82326 |
2.48 |
| 2026-04-13 12:00 |
16:48:55.56 |
-29:08:36.3 |
HIP 82326 |
4.62 |
| 2026-04-14 00:00 |
16:48:46.19 |
-29:09:30.1 |
HIP 82326 |
6.84 |
| 2026-04-14 12:00 |
16:48:36.58 |
-29:10:23.5 |
HIP 82326 |
9.12 |
| 2026-04-15 00:00 |
16:48:26.72 |
-29:11:16.4 |
HIP 82326 |
11.44 |
| 2026-04-15 12:00 |
16:48:16.61 |
-29:12:08.7 |
HIP 82326 |
13.81 |
| 2026-04-16 00:00 |
16:48:06.26 |
-29:13:00.6 |
HIP 82228 |
15.74 |