| Parameter |
Value |
| Designation |
333P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-04-01T21:15:05.506560Z |
| Orbit solution date (soln_date, UTC) |
2025-09-22T13:42:28Z |
| Obs used |
1302 |
| NEO |
Yes |
| M1 |
14.900 |
| K1 |
7.250 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2020-03-15.0000000 |
| e |
0.73612569 |
| q (au) |
1.113680 |
| a (au) |
4.220494 |
| i (deg) |
131.973041 |
| Ω (om, deg) |
115.621541 |
| ω (w, deg) |
26.072700 |
| M (ma, deg) |
164.043825 |
Magnitude
Scatter + Global Linear
$$
M_a = (13.962 + 4.846\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
13.962 |
| n |
4.846 |
| gf |
0.999 |
| gb |
-0.860 |
| k |
0.964 |
| 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
Residuals (Piecewise)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| Start (UTC) |
End (UTC) |
a |
b |
| 2024-02-29 |
2025-09-18 |
+1.5741 |
-0.652 |
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 |
20:48:44.61 |
-10:41:37.6 |
HIP 102527 |
31.25 |
| 2026-06-01 12:00 |
20:48:26.55 |
-10:43:35.6 |
HIP 102527 |
26.80 |
| 2026-06-02 00:00 |
20:48:08.26 |
-10:45:34.8 |
HIP 102527 |
22.46 |
| 2026-06-02 12:00 |
20:47:49.73 |
-10:47:35.1 |
HIP 102527 |
18.37 |
| 2026-06-03 00:00 |
20:47:30.97 |
-10:49:36.7 |
HIP 102527 |
14.79 |
| 2026-06-03 12:00 |
20:47:11.97 |
-10:51:39.4 |
HIP 102527 |
12.24 |
| 2026-06-04 00:00 |
20:46:52.74 |
-10:53:43.3 |
HIP 102527 |
11.54 |
| 2026-06-04 12:00 |
20:46:33.28 |
-10:55:48.4 |
HIP 102527 |
13.04 |
| 2026-06-05 00:00 |
20:46:13.59 |
-10:57:54.6 |
HIP 102527 |
16.20 |
| 2026-06-05 12:00 |
20:45:53.66 |
-11:00:02.1 |
HIP 102391 |
14.04 |
| 2026-06-06 00:00 |
20:45:33.51 |
-11:02:10.6 |
HIP 102391 |
8.98 |
| 2026-06-06 12:00 |
20:45:13.12 |
-11:04:20.4 |
HIP 102391 |
4.69 |
| 2026-06-07 00:00 |
20:44:52.51 |
-11:06:31.3 |
HIP 102391 |
4.80 |
| 2026-06-07 12:00 |
20:44:31.66 |
-11:08:43.3 |
HIP 102391 |
9.26 |
| 2026-06-08 00:00 |
20:44:10.59 |
-11:10:56.5 |
HIP 102391 |
14.56 |
| 2026-06-08 12:00 |
20:43:49.30 |
-11:13:10.8 |
HIP 102391 |
20.10 |
| 2026-06-09 00:00 |
20:43:27.77 |
-11:15:26.3 |
HIP 102218 |
20.78 |
| 2026-06-09 12:00 |
20:43:06.02 |
-11:17:42.9 |
HIP 102218 |
20.50 |
| 2026-06-10 00:00 |
20:42:44.05 |
-11:20:00.6 |
HIP 102218 |
21.84 |
| 2026-06-10 12:00 |
20:42:21.85 |
-11:22:19.5 |
HIP 102291 |
24.09 |
| 2026-06-11 00:00 |
20:41:59.43 |
-11:24:39.5 |
HIP 102291 |
27.14 |
| 2026-06-11 12:00 |
20:41:36.79 |
-11:27:00.5 |
HIP 102130 |
30.36 |
| 2026-06-12 00:00 |
20:41:13.94 |
-11:29:22.7 |
HIP 101935 |
31.70 |
| 2026-06-12 12:00 |
20:40:50.86 |
-11:31:45.9 |
HIP 101935 |
25.65 |
| 2026-06-13 00:00 |
20:40:27.57 |
-11:34:10.3 |
HIP 101935 |
19.59 |
| 2026-06-13 12:00 |
20:40:04.06 |
-11:36:35.7 |
HIP 101935 |
13.60 |
| 2026-06-14 00:00 |
20:39:40.33 |
-11:39:02.2 |
HIP 101935 |
7.99 |
| 2026-06-14 12:00 |
20:39:16.40 |
-11:41:29.8 |
HIP 101935 |
4.67 |
| 2026-06-15 00:00 |
20:38:52.25 |
-11:43:58.4 |
HIP 101935 |
7.84 |
| 2026-06-15 12:00 |
20:38:27.90 |
-11:46:28.0 |
HIP 101935 |
13.58 |
| 2026-06-16 00:00 |
20:38:03.33 |
-11:48:58.7 |
HIP 101760 |
9.79 |
| 2026-06-16 12:00 |
20:37:38.57 |
-11:51:30.4 |
HIP 101760 |
3.25 |
| 2026-06-17 00:00 |
20:37:13.60 |
-11:54:03.1 |
HIP 101760 |
3.46 |
| 2026-06-17 12:00 |
20:36:48.42 |
-11:56:36.8 |
HIP 101760 |
10.10 |
| 2026-06-18 00:00 |
20:36:23.05 |
-11:59:11.5 |
HIP 101760 |
16.81 |
| 2026-06-18 12:00 |
20:35:57.49 |
-12:01:47.1 |
HIP 101647 |
21.59 |
| 2026-06-19 00:00 |
20:35:31.72 |
-12:04:23.7 |
HIP 101647 |
21.47 |
| 2026-06-19 12:00 |
20:35:05.77 |
-12:07:01.3 |
HIP 101492 |
20.71 |
| 2026-06-20 00:00 |
20:34:39.62 |
-12:09:39.8 |
HIP 101492 |
14.33 |
| 2026-06-20 12:00 |
20:34:13.28 |
-12:12:19.2 |
HIP 101492 |
8.76 |
| 2026-06-21 00:00 |
20:33:46.76 |
-12:14:59.6 |
HIP 101492 |
6.72 |
| 2026-06-21 12:00 |
20:33:20.06 |
-12:17:40.8 |
HIP 101492 |
10.61 |
| 2026-06-22 00:00 |
20:32:53.17 |
-12:20:22.9 |
HIP 101492 |
16.77 |