333P/LINEAR
| 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
$$
M_a = (13.969 + 4.863\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
13.969 |
| n |
4.863 |
| gf |
1.000 |
| gb |
-0.860 |
| k |
0.963 |
| 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 |
+1.5364 |
-0.637 |
log10 r = log10(heliocentric distance / AU), Δ = geocentric distance (AU)
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
20:31:07.35 |
-09:06:35.6 |
HIP 101379 |
29.35 |
| 2026-02-03 12:00 |
20:31:25.71 |
-09:06:38.1 |
HIP 101379 |
25.57 |
| 2026-02-04 00:00 |
20:31:44.03 |
-09:06:40.2 |
HIP 101379 |
22.08 |
| 2026-02-04 12:00 |
20:32:02.30 |
-09:06:41.8 |
HIP 101379 |
19.03 |
| 2026-02-05 00:00 |
20:32:20.53 |
-09:06:43.0 |
HIP 101379 |
16.68 |
| 2026-02-05 12:00 |
20:32:38.71 |
-09:06:43.7 |
HIP 101379 |
15.33 |
| 2026-02-06 00:00 |
20:32:56.84 |
-09:06:44.0 |
HIP 101379 |
15.24 |
| 2026-02-06 12:00 |
20:33:14.92 |
-09:06:44.0 |
HIP 101379 |
16.42 |
| 2026-02-07 00:00 |
20:33:32.96 |
-09:06:43.5 |
HIP 101379 |
18.61 |
| 2026-02-07 12:00 |
20:33:50.94 |
-09:06:42.6 |
HIP 101580 |
21.39 |
| 2026-02-08 00:00 |
20:34:08.87 |
-09:06:41.3 |
HIP 101580 |
17.21 |
| 2026-02-08 12:00 |
20:34:26.75 |
-09:06:39.7 |
HIP 101580 |
13.21 |
| 2026-02-09 00:00 |
20:34:44.58 |
-09:06:37.7 |
HIP 101580 |
9.59 |
| 2026-02-09 12:00 |
20:35:02.36 |
-09:06:35.3 |
HIP 101580 |
6.93 |
| 2026-02-10 00:00 |
20:35:20.08 |
-09:06:32.6 |
HIP 101580 |
6.53 |
| 2026-02-10 12:00 |
20:35:37.74 |
-09:06:29.5 |
HIP 101580 |
8.67 |
| 2026-02-11 00:00 |
20:35:55.35 |
-09:06:26.0 |
HIP 101580 |
12.06 |
| 2026-02-11 12:00 |
20:36:12.90 |
-09:06:22.3 |
HIP 101580 |
15.90 |
| 2026-02-12 00:00 |
20:36:30.39 |
-09:06:18.2 |
HIP 101580 |
19.93 |
| 2026-02-12 12:00 |
20:36:47.82 |
-09:06:13.8 |
HIP 101580 |
24.05 |
| 2026-02-13 00:00 |
20:37:05.19 |
-09:06:09.1 |
HIP 101580 |
28.21 |
| 2026-02-13 12:00 |
20:37:22.50 |
-09:06:04.1 |
HIP 101580 |
32.38 |
| 2026-02-14 00:00 |
20:37:39.75 |
-09:05:58.7 |
HIP 101813 |
34.23 |
| 2026-02-14 12:00 |
20:37:56.93 |
-09:05:53.2 |
HIP 101813 |
33.87 |
| 2026-02-15 00:00 |
20:38:14.05 |
-09:05:47.3 |
HIP 101813 |
34.03 |
| 2026-02-15 12:00 |
20:38:31.11 |
-09:05:41.1 |
HIP 101813 |
34.70 |
| 2026-02-16 00:00 |
20:38:48.09 |
-09:05:34.7 |
HIP 101813 |
35.85 |
| 2026-02-16 12:00 |
20:39:05.01 |
-09:05:28.1 |
HIP 101813 |
37.43 |
| 2026-02-17 00:00 |
20:39:21.87 |
-09:05:21.2 |
HIP 102055 |
35.48 |
| 2026-02-17 12:00 |
20:39:38.65 |
-09:05:14.1 |
HIP 102055 |
32.86 |
| 2026-02-18 00:00 |
20:39:55.36 |
-09:05:06.7 |
HIP 102055 |
30.58 |
| 2026-02-18 12:00 |
20:40:12.00 |
-09:04:59.1 |
HIP 102055 |
28.72 |
| 2026-02-19 00:00 |
20:40:28.57 |
-09:04:51.3 |
HIP 102055 |
27.35 |
| 2026-02-19 12:00 |
20:40:45.06 |
-09:04:43.4 |
HIP 102055 |
26.55 |
| 2026-02-20 00:00 |
20:41:01.48 |
-09:04:35.2 |
HIP 102055 |
26.36 |
| 2026-02-20 12:00 |
20:41:17.83 |
-09:04:26.8 |
HIP 102055 |
26.79 |
| 2026-02-21 00:00 |
20:41:34.09 |
-09:04:18.3 |
HIP 102055 |
27.79 |
| 2026-02-21 12:00 |
20:41:50.28 |
-09:04:09.6 |
HIP 102055 |
29.30 |
| 2026-02-22 00:00 |
20:42:06.40 |
-09:04:00.7 |
HIP 102055 |
31.24 |
| 2026-02-22 12:00 |
20:42:22.43 |
-09:03:51.7 |
HIP 102351 |
28.14 |
| 2026-02-23 00:00 |
20:42:38.38 |
-09:03:42.6 |
HIP 102351 |
24.20 |
| 2026-02-23 12:00 |
20:42:54.25 |
-09:03:33.3 |
HIP 102351 |
20.28 |
| 2026-02-24 00:00 |
20:43:10.04 |
-09:03:23.9 |
HIP 102351 |
16.37 |