| Parameter |
Value |
| Designation |
472P/NEAT-LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-07-27T15:46:29.570880Z |
| Orbit solution date (soln_date, UTC) |
2026-03-07T14:43:41Z |
| Obs used |
1350 |
| NEO |
- |
| M1 |
6.500 |
| K1 |
14.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2023-09-09T02:13:12.604800Z |
| Discovery magnitude (MPC) |
21.70 G |
| Discovery observatory (MPC) |
Z84 · Calar Alto-Schmidt |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2018-04-29.0000000 |
| e |
0.55921342 |
| q (au) |
3.369110 |
| a (au) |
7.643404 |
| i (deg) |
10.900416 |
| Ω (om, deg) |
207.853697 |
| ω (w, deg) |
218.510075 |
| M (ma, deg) |
253.579745 |
Magnitude
Scatter + Global Linear
$$
M_a = (5.610 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
5.610 |
| n |
6.000 |
| gf |
0.889 |
| gb |
-0.500 |
| k |
0.954 |
| 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
Residuals (Piecewise)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| Start (UTC) |
End (UTC) |
a |
b |
| 2023-09-05 |
2024-07-25 |
+47.1974 |
-24.324 |
| 2024-08-12 |
2026-02-19 |
+0.5745 |
-0.429 |
log10 r = log10(heliocentric distance / AU), Δ = geocentric distance (AU)
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
11:07:12.99 |
-00:44:47.6 |
HIP 54272 |
16.59 |
| 2026-09-20 12:00 |
11:07:34.46 |
-00:46:53.8 |
HIP 54445 |
12.79 |
| 2026-09-21 00:00 |
11:07:55.90 |
-00:49:00.0 |
HIP 54445 |
7.07 |
| 2026-09-21 12:00 |
11:08:17.31 |
-00:51:06.2 |
HIP 54445 |
1.71 |
| 2026-09-22 00:00 |
11:08:38.68 |
-00:53:12.5 |
HIP 54445 |
4.67 |
| 2026-09-22 12:00 |
11:09:00.03 |
-00:55:18.8 |
HIP 54445 |
10.33 |
| 2026-09-23 00:00 |
11:09:21.34 |
-00:57:25.1 |
HIP 54445 |
16.03 |
| 2026-09-23 12:00 |
11:09:42.61 |
-00:59:31.4 |
HIP 54515 |
21.71 |
| 2026-09-24 00:00 |
11:10:03.86 |
-01:01:37.7 |
HIP 54515 |
22.24 |
| 2026-09-24 12:00 |
11:10:25.07 |
-01:03:44.0 |
HIP 54656 |
24.12 |
| 2026-09-25 00:00 |
11:10:46.24 |
-01:05:50.4 |
HIP 54656 |
19.66 |
| 2026-09-25 12:00 |
11:11:07.38 |
-01:07:56.7 |
HIP 54656 |
16.01 |
| 2026-09-26 00:00 |
11:11:28.48 |
-01:10:03.0 |
HIP 54728 |
12.00 |
| 2026-09-26 12:00 |
11:11:49.55 |
-01:12:09.3 |
HIP 54728 |
6.75 |
| 2026-09-27 00:00 |
11:12:10.58 |
-01:14:15.6 |
HIP 54728 |
3.37 |
| 2026-09-27 12:00 |
11:12:31.58 |
-01:16:21.9 |
HIP 54728 |
6.42 |
| 2026-09-28 00:00 |
11:12:52.53 |
-01:18:28.2 |
HIP 54802 |
7.31 |
| 2026-09-28 12:00 |
11:13:13.45 |
-01:20:34.4 |
HIP 54802 |
4.15 |
| 2026-09-29 00:00 |
11:13:34.33 |
-01:22:40.7 |
HIP 54802 |
6.67 |
| 2026-09-29 12:00 |
11:13:55.17 |
-01:24:46.8 |
HIP 54802 |
11.62 |
| 2026-09-30 00:00 |
11:14:15.97 |
-01:26:53.0 |
HIP 54910 |
11.94 |
| 2026-09-30 12:00 |
11:14:36.73 |
-01:28:59.1 |
HIP 54910 |
12.74 |
| 2026-10-01 00:00 |
11:14:57.45 |
-01:31:05.1 |
HIP 54910 |
15.64 |
| 2026-10-01 12:00 |
11:15:18.13 |
-01:33:11.1 |
HIP 54910 |
19.72 |
| 2026-10-02 00:00 |
11:15:38.77 |
-01:35:17.1 |
HIP 54910 |
24.40 |
| 2026-10-02 12:00 |
11:15:59.36 |
-01:37:23.0 |
HIP 55132 |
28.48 |
| 2026-10-03 00:00 |
11:16:19.92 |
-01:39:28.8 |
HIP 55132 |
23.67 |
| 2026-10-03 12:00 |
11:16:40.43 |
-01:41:34.6 |
HIP 55132 |
19.26 |
| 2026-10-04 00:00 |
11:17:00.89 |
-01:43:40.3 |
HIP 55132 |
15.59 |
| 2026-10-04 12:00 |
11:17:21.31 |
-01:45:45.9 |
HIP 55132 |
13.27 |
| 2026-10-05 00:00 |
11:17:41.69 |
-01:47:51.5 |
HIP 55132 |
13.04 |
| 2026-10-05 12:00 |
11:18:02.02 |
-01:49:56.9 |
HIP 55132 |
14.98 |
| 2026-10-06 00:00 |
11:18:22.30 |
-01:52:02.3 |
HIP 55132 |
18.40 |
| 2026-10-06 12:00 |
11:18:42.54 |
-01:54:07.6 |
HIP 55288 |
17.94 |
| 2026-10-07 00:00 |
11:19:02.73 |
-01:56:12.8 |
HIP 55288 |
17.67 |
| 2026-10-07 12:00 |
11:19:22.87 |
-01:58:17.8 |
HIP 55379 |
18.52 |
| 2026-10-08 00:00 |
11:19:42.97 |
-02:00:22.8 |
HIP 55379 |
16.21 |
| 2026-10-08 12:00 |
11:20:03.01 |
-02:02:27.6 |
HIP 55379 |
15.55 |
| 2026-10-09 00:00 |
11:20:23.00 |
-02:04:32.3 |
HIP 55379 |
16.72 |
| 2026-10-09 12:00 |
11:20:42.94 |
-02:06:36.9 |
HIP 55453 |
14.98 |
| 2026-10-10 00:00 |
11:21:02.83 |
-02:08:41.4 |
HIP 55453 |
13.85 |
| 2026-10-10 12:00 |
11:21:22.67 |
-02:10:45.7 |
HIP 55453 |
14.75 |
| 2026-10-11 00:00 |
11:21:42.45 |
-02:12:49.9 |
HIP 55510 |
12.31 |