| Parameter |
Value |
| Designation |
C/2001 M10 (NEAT) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2001-06-21T05:05:18.251520Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:09Z |
| Obs used |
93 |
| NEO |
- |
| M1 |
10.700 |
| K1 |
6.250 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2001-11-03.0000000 |
| e |
0.80109494 |
| q (au) |
5.302796 |
| a (au) |
26.659937 |
| i (deg) |
28.083400 |
| Ω (om, deg) |
293.917499 |
| ω (w, deg) |
5.478964 |
| M (ma, deg) |
0.965087 |
Magnitude
Scatter + Global Linear
$$
M_a = (11.120 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
11.120 |
| n |
2.000 |
| gf |
0.974 |
| gb |
-0.951 |
| k |
1.000 |
| δ90 |
9.726 |
| 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 |
06:13:57.71 |
+33:19:06.2 |
HIP 29581 |
4.48 |
| 2026-03-26 12:00 |
06:13:58.15 |
+33:18:54.7 |
HIP 29581 |
4.28 |
| 2026-03-27 00:00 |
06:13:58.63 |
+33:18:43.2 |
HIP 29581 |
4.08 |
| 2026-03-27 12:00 |
06:13:59.15 |
+33:18:31.7 |
HIP 29581 |
3.88 |
| 2026-03-28 00:00 |
06:13:59.71 |
+33:18:20.3 |
HIP 29581 |
3.68 |
| 2026-03-28 12:00 |
06:14:00.30 |
+33:18:08.8 |
HIP 29581 |
3.49 |
| 2026-03-29 00:00 |
06:14:00.93 |
+33:17:57.3 |
HIP 29581 |
3.30 |
| 2026-03-29 12:00 |
06:14:01.59 |
+33:17:45.9 |
HIP 29581 |
3.11 |
| 2026-03-30 00:00 |
06:14:02.29 |
+33:17:34.4 |
HIP 29581 |
2.94 |
| 2026-03-30 12:00 |
06:14:03.02 |
+33:17:22.9 |
HIP 29581 |
2.77 |
| 2026-03-31 00:00 |
06:14:03.79 |
+33:17:11.5 |
HIP 29581 |
2.63 |
| 2026-03-31 12:00 |
06:14:04.60 |
+33:17:00.0 |
HIP 29581 |
2.49 |
| 2026-04-01 00:00 |
06:14:05.44 |
+33:16:48.6 |
HIP 29581 |
2.39 |
| 2026-04-01 12:00 |
06:14:06.31 |
+33:16:37.1 |
HIP 29581 |
2.31 |
| 2026-04-02 00:00 |
06:14:07.22 |
+33:16:25.7 |
HIP 29581 |
2.26 |
| 2026-04-02 12:00 |
06:14:08.17 |
+33:16:14.3 |
HIP 29581 |
2.25 |
| 2026-04-03 00:00 |
06:14:09.15 |
+33:16:02.9 |
HIP 29581 |
2.28 |
| 2026-04-03 12:00 |
06:14:10.16 |
+33:15:51.4 |
HIP 29581 |
2.35 |
| 2026-04-04 00:00 |
06:14:11.22 |
+33:15:40.0 |
HIP 29581 |
2.46 |
| 2026-04-04 12:00 |
06:14:12.30 |
+33:15:28.6 |
HIP 29581 |
2.60 |
| 2026-04-05 00:00 |
06:14:13.42 |
+33:15:17.3 |
HIP 29581 |
2.77 |
| 2026-04-05 12:00 |
06:14:14.58 |
+33:15:05.9 |
HIP 29581 |
2.98 |
| 2026-04-06 00:00 |
06:14:15.77 |
+33:14:54.5 |
HIP 29581 |
3.20 |
| 2026-04-06 12:00 |
06:14:16.99 |
+33:14:43.2 |
HIP 29581 |
3.45 |
| 2026-04-07 00:00 |
06:14:18.25 |
+33:14:31.8 |
HIP 29581 |
3.71 |
| 2026-04-07 12:00 |
06:14:19.54 |
+33:14:20.5 |
HIP 29581 |
3.99 |
| 2026-04-08 00:00 |
06:14:20.87 |
+33:14:09.2 |
HIP 29581 |
4.29 |
| 2026-04-08 12:00 |
06:14:22.23 |
+33:13:57.9 |
HIP 29581 |
4.60 |
| 2026-04-09 00:00 |
06:14:23.62 |
+33:13:46.6 |
HIP 29581 |
4.91 |
| 2026-04-09 12:00 |
06:14:25.05 |
+33:13:35.3 |
HIP 29581 |
5.24 |
| 2026-04-10 00:00 |
06:14:26.51 |
+33:13:24.1 |
HIP 29581 |
5.58 |
| 2026-04-10 12:00 |
06:14:28.01 |
+33:13:12.8 |
HIP 29581 |
5.93 |
| 2026-04-11 00:00 |
06:14:29.54 |
+33:13:01.6 |
HIP 29581 |
6.29 |
| 2026-04-11 12:00 |
06:14:31.10 |
+33:12:50.4 |
HIP 29581 |
6.65 |
| 2026-04-12 00:00 |
06:14:32.70 |
+33:12:39.2 |
HIP 29581 |
7.02 |
| 2026-04-12 12:00 |
06:14:34.33 |
+33:12:28.0 |
HIP 29581 |
7.40 |
| 2026-04-13 00:00 |
06:14:35.99 |
+33:12:16.9 |
HIP 29581 |
7.79 |
| 2026-04-13 12:00 |
06:14:37.68 |
+33:12:05.8 |
HIP 29581 |
8.19 |
| 2026-04-14 00:00 |
06:14:39.41 |
+33:11:54.6 |
HIP 29581 |
8.59 |
| 2026-04-14 12:00 |
06:14:41.17 |
+33:11:43.6 |
HIP 29581 |
9.00 |
| 2026-04-15 00:00 |
06:14:42.97 |
+33:11:32.5 |
HIP 29581 |
9.41 |
| 2026-04-15 12:00 |
06:14:44.79 |
+33:11:21.4 |
HIP 29581 |
9.83 |
| 2026-04-16 00:00 |
06:14:46.65 |
+33:11:10.4 |
HIP 29581 |
10.26 |