| 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
$$
M_a = (6.001 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
6.001 |
| n |
6.000 |
| gf |
0.912 |
| gb |
-0.905 |
| k |
1.000 |
| δ90 |
6.338 |
| 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 |
+13.7133 |
-8.333 |
log10 r = log10(heliocentric distance / AU), Δ = geocentric distance (AU)
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 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 |
| 2026-06-02 12:00 |
00:58:32.20 |
-14:59:56.5 |
HIP 4597 |
10.55 |
| 2026-06-03 00:00 |
00:58:41.80 |
-14:59:52.1 |
HIP 4597 |
9.84 |
| 2026-06-03 12:00 |
00:58:51.33 |
-14:59:48.4 |
HIP 4597 |
9.64 |
| 2026-06-04 00:00 |
00:59:00.80 |
-14:59:45.4 |
HIP 4597 |
9.97 |
| 2026-06-04 12:00 |
00:59:10.20 |
-14:59:43.1 |
HIP 4597 |
10.76 |
| 2026-06-05 00:00 |
00:59:19.53 |
-14:59:41.6 |
HIP 4597 |
11.92 |
| 2026-06-05 12:00 |
00:59:28.79 |
-14:59:40.8 |
HIP 4597 |
13.34 |
| 2026-06-06 00:00 |
00:59:37.98 |
-14:59:40.8 |
HIP 4597 |
14.94 |
| 2026-06-06 12:00 |
00:59:47.10 |
-14:59:41.5 |
HIP 4597 |
16.66 |
| 2026-06-07 00:00 |
00:59:56.15 |
-14:59:43.0 |
HIP 4597 |
18.47 |
| 2026-06-07 12:00 |
01:00:05.12 |
-14:59:45.2 |
HIP 4597 |
20.32 |
| 2026-06-08 00:00 |
01:00:14.03 |
-14:59:48.2 |
HIP 4597 |
22.21 |
| 2026-06-08 12:00 |
01:00:22.86 |
-14:59:51.9 |
HIP 4814 |
20.40 |
| 2026-06-09 00:00 |
01:00:31.62 |
-14:59:56.3 |
HIP 4814 |
18.31 |
| 2026-06-09 12:00 |
01:00:40.31 |
-15:00:01.6 |
HIP 4814 |
16.24 |
| 2026-06-10 00:00 |
01:00:48.92 |
-15:00:07.5 |
HIP 4814 |
14.19 |
| 2026-06-10 12:00 |
01:00:57.46 |
-15:00:14.2 |
HIP 4814 |
12.18 |
| 2026-06-11 00:00 |
01:01:05.93 |
-15:00:21.7 |
HIP 4814 |
10.21 |
| 2026-06-11 12:00 |
01:01:14.31 |
-15:00:29.9 |
HIP 4814 |
8.30 |
| 2026-06-12 00:00 |
01:01:22.63 |
-15:00:38.9 |
HIP 4814 |
6.49 |
| 2026-06-12 12:00 |
01:01:30.86 |
-15:00:48.6 |
HIP 4814 |
4.86 |
| 2026-06-13 00:00 |
01:01:39.02 |
-15:00:59.0 |
HIP 4814 |
3.64 |
| 2026-06-13 12:00 |
01:01:47.10 |
-15:01:10.3 |
HIP 4814 |
3.29 |
| 2026-06-14 00:00 |
01:01:55.10 |
-15:01:22.2 |
HIP 4814 |
4.00 |
| 2026-06-14 12:00 |
01:02:03.03 |
-15:01:35.0 |
HIP 4814 |
5.36 |
| 2026-06-15 00:00 |
01:02:10.87 |
-15:01:48.5 |
HIP 4814 |
6.98 |
| 2026-06-15 12:00 |
01:02:18.63 |
-15:02:02.7 |
HIP 4814 |
8.71 |
| 2026-06-16 00:00 |
01:02:26.32 |
-15:02:17.7 |
HIP 4814 |
10.48 |
| 2026-06-16 12:00 |
01:02:33.92 |
-15:02:33.5 |
HIP 4814 |
12.27 |
| 2026-06-17 00:00 |
01:02:41.44 |
-15:02:49.9 |
HIP 4814 |
14.06 |
| 2026-06-17 12:00 |
01:02:48.88 |
-15:03:07.2 |
HIP 4814 |
15.84 |
| 2026-06-18 00:00 |
01:02:56.24 |
-15:03:25.2 |
HIP 4814 |
17.62 |
| 2026-06-18 12:00 |
01:03:03.52 |
-15:03:43.9 |
HIP 4814 |
19.39 |
| 2026-06-19 00:00 |
01:03:10.71 |
-15:04:03.4 |
HIP 4814 |
21.14 |
| 2026-06-19 12:00 |
01:03:17.82 |
-15:04:23.7 |
HIP 4937 |
22.23 |
| 2026-06-20 00:00 |
01:03:24.84 |
-15:04:44.6 |
HIP 4937 |
21.86 |
| 2026-06-20 12:00 |
01:03:31.79 |
-15:05:06.4 |
HIP 4937 |
21.61 |
| 2026-06-21 00:00 |
01:03:38.64 |
-15:05:28.8 |
HIP 4937 |
21.48 |
| 2026-06-21 12:00 |
01:03:45.42 |
-15:05:52.0 |
HIP 4937 |
21.47 |
| 2026-06-22 00:00 |
01:03:52.10 |
-15:06:16.0 |
HIP 4937 |
21.57 |