| Parameter |
Value |
| Designation |
334P/NEAT |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-05-19T03:35:22.182720Z |
| Orbit solution date (soln_date, UTC) |
2023-05-03T22:44:41Z |
| Obs used |
404 |
| NEO |
- |
| M1 |
6.500 |
| K1 |
15.250 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2010-10-20.0000000 |
| e |
0.35453120 |
| q (au) |
4.187661 |
| a (au) |
6.487782 |
| i (deg) |
19.057080 |
| Ω (om, deg) |
92.783588 |
| ω (w, deg) |
81.094516 |
| M (ma, deg) |
216.668886 |
Magnitude
Scatter + Global Linear
$$
M_a = (6.000 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
6.000 |
| n |
6.000 |
| gf |
0.913 |
| gb |
-0.905 |
| k |
1.000 |
| δ90 |
6.383 |
| 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 |
| 2016-01-07 |
2017-05-18 |
+13.7114 |
-8.331 |
log10 r = log10(heliocentric distance / AU), Δ = geocentric distance (AU)
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
00:50:42.04 |
-15:14:32.4 |
HIP 3866 |
17.79 |
| 2026-05-12 12:00 |
00:50:54.10 |
-15:13:57.2 |
HIP 3866 |
20.61 |
| 2026-05-13 00:00 |
00:51:06.12 |
-15:13:22.7 |
HIP 4024 |
21.12 |
| 2026-05-13 12:00 |
00:51:18.08 |
-15:12:48.8 |
HIP 4024 |
19.81 |
| 2026-05-14 00:00 |
00:51:30.00 |
-15:12:15.7 |
HIP 4024 |
18.89 |
| 2026-05-14 12:00 |
00:51:41.87 |
-15:11:43.2 |
HIP 4024 |
18.41 |
| 2026-05-15 00:00 |
00:51:53.69 |
-15:11:11.5 |
HIP 4024 |
18.39 |
| 2026-05-15 12:00 |
00:52:05.46 |
-15:10:40.4 |
HIP 4024 |
18.82 |
| 2026-05-16 00:00 |
00:52:17.19 |
-15:10:10.0 |
HIP 4024 |
19.68 |
| 2026-05-16 12:00 |
00:52:28.86 |
-15:09:40.3 |
HIP 4024 |
20.91 |
| 2026-05-17 00:00 |
00:52:40.48 |
-15:09:11.4 |
HIP 4188 |
21.54 |
| 2026-05-17 12:00 |
00:52:52.05 |
-15:08:43.1 |
HIP 4188 |
19.73 |
| 2026-05-18 00:00 |
00:53:03.57 |
-15:08:15.5 |
HIP 4188 |
18.21 |
| 2026-05-18 12:00 |
00:53:15.04 |
-15:07:48.7 |
HIP 4188 |
17.04 |
| 2026-05-19 00:00 |
00:53:26.45 |
-15:07:22.5 |
HIP 4188 |
16.28 |
| 2026-05-19 12:00 |
00:53:37.81 |
-15:06:57.1 |
HIP 4188 |
15.98 |
| 2026-05-20 00:00 |
00:53:49.12 |
-15:06:32.4 |
HIP 4188 |
16.18 |
| 2026-05-20 12:00 |
00:54:00.37 |
-15:06:08.3 |
HIP 4188 |
16.83 |
| 2026-05-21 00:00 |
00:54:11.56 |
-15:05:45.0 |
HIP 4188 |
17.89 |
| 2026-05-21 12:00 |
00:54:22.70 |
-15:05:22.4 |
HIP 4188 |
19.28 |
| 2026-05-22 00:00 |
00:54:33.79 |
-15:05:00.6 |
HIP 4188 |
20.94 |
| 2026-05-22 12:00 |
00:54:44.81 |
-15:04:39.4 |
HIP 4188 |
22.78 |
| 2026-05-23 00:00 |
00:54:55.78 |
-15:04:18.9 |
HIP 4188 |
24.78 |
| 2026-05-23 12:00 |
00:55:06.70 |
-15:03:59.2 |
HIP 4188 |
26.89 |
| 2026-05-24 00:00 |
00:55:17.55 |
-15:03:40.2 |
HIP 4188 |
29.08 |
| 2026-05-24 12:00 |
00:55:28.35 |
-15:03:21.9 |
HIP 4414 |
28.17 |
| 2026-05-25 00:00 |
00:55:39.09 |
-15:03:04.3 |
HIP 4414 |
26.57 |
| 2026-05-25 12:00 |
00:55:49.76 |
-15:02:47.5 |
HIP 4414 |
25.14 |
| 2026-05-26 00:00 |
00:56:00.38 |
-15:02:31.3 |
HIP 4414 |
23.94 |
| 2026-05-26 12:00 |
00:56:10.94 |
-15:02:15.9 |
HIP 4489 |
22.06 |
| 2026-05-27 00:00 |
00:56:21.44 |
-15:02:01.3 |
HIP 4489 |
19.70 |
| 2026-05-27 12:00 |
00:56:31.88 |
-15:01:47.3 |
HIP 4489 |
17.41 |
| 2026-05-28 00:00 |
00:56:42.25 |
-15:01:34.0 |
HIP 4489 |
15.21 |
| 2026-05-28 12:00 |
00:56:52.57 |
-15:01:21.5 |
HIP 4489 |
13.15 |
| 2026-05-29 00:00 |
00:57:02.82 |
-15:01:09.8 |
HIP 4489 |
11.28 |
| 2026-05-29 12:00 |
00:57:13.01 |
-15:00:58.7 |
HIP 4489 |
9.72 |
| 2026-05-30 00:00 |
00:57:23.13 |
-15:00:48.4 |
HIP 4489 |
8.60 |
| 2026-05-30 12:00 |
00:57:33.19 |
-15:00:38.8 |
HIP 4489 |
8.11 |
| 2026-05-31 00:00 |
00:57:43.19 |
-15:00:29.9 |
HIP 4489 |
8.34 |
| 2026-05-31 12:00 |
00:57:53.12 |
-15:00:21.8 |
HIP 4489 |
9.22 |
| 2026-06-01 00:00 |
00:58:02.99 |
-15:00:14.4 |
HIP 4489 |
10.59 |
| 2026-06-01 12:00 |
00:58:12.79 |
-15:00:07.7 |
HIP 4489 |
12.26 |
| 2026-06-02 00:00 |
00:58:22.53 |
-15:00:01.7 |
HIP 4597 |
11.68 |