| Parameter |
Value |
| Designation |
354P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2013-05-21T23:06:18.938880Z |
| Orbit solution date (soln_date, UTC) |
2024-04-16T15:09:05Z |
| Obs used |
250 |
| NEO |
- |
| M1 |
15.600 |
| K1 |
10.000 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2014-02-13.0000000 |
| e |
0.12497150 |
| q (au) |
2.003549 |
| a (au) |
2.289696 |
| i (deg) |
5.256074 |
| Ω (om, deg) |
320.235372 |
| ω (w, deg) |
132.732437 |
| M (ma, deg) |
75.964266 |
Magnitude
Scatter + Global Linear
$$
M_a = (16.305 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
16.305 |
| n |
2.000 |
| gf |
0.987 |
| gb |
-0.762 |
| k |
0.999 |
| δ90 |
9.999 |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
00:13:49.39 |
+03:31:50.1 |
HIP 1179 |
16.41 |
| 2026-05-12 12:00 |
00:14:37.72 |
+03:37:48.8 |
HIP 1179 |
16.00 |
| 2026-05-13 00:00 |
00:15:26.02 |
+03:43:47.2 |
HIP 1179 |
24.60 |
| 2026-05-13 12:00 |
00:16:14.28 |
+03:49:45.4 |
HIP 1272 |
25.66 |
| 2026-05-14 00:00 |
00:17:02.50 |
+03:55:43.4 |
HIP 1455 |
18.13 |
| 2026-05-14 12:00 |
00:17:50.69 |
+04:01:41.3 |
HIP 1455 |
14.53 |
| 2026-05-15 00:00 |
00:18:38.84 |
+04:07:38.9 |
HIP 1455 |
21.29 |
| 2026-05-15 12:00 |
00:19:26.95 |
+04:13:36.3 |
HIP 1455 |
32.47 |
| 2026-05-16 00:00 |
00:20:15.03 |
+04:19:33.5 |
HIP 1628 |
27.23 |
| 2026-05-16 12:00 |
00:21:03.07 |
+04:25:30.4 |
HIP 1628 |
23.61 |
| 2026-05-17 00:00 |
00:21:51.06 |
+04:31:27.1 |
HIP 1628 |
27.02 |
| 2026-05-17 12:00 |
00:22:39.02 |
+04:37:23.5 |
HIP 1628 |
35.48 |
| 2026-05-18 00:00 |
00:23:26.94 |
+04:43:19.7 |
HIP 1770 |
34.02 |
| 2026-05-18 12:00 |
00:24:14.82 |
+04:49:15.7 |
HIP 1770 |
36.75 |
| 2026-05-19 00:00 |
00:25:02.66 |
+04:55:11.3 |
HIP 2165 |
34.50 |
| 2026-05-19 12:00 |
00:25:50.46 |
+05:01:06.7 |
HIP 2165 |
22.13 |
| 2026-05-20 00:00 |
00:26:38.22 |
+05:07:01.8 |
HIP 2165 |
11.97 |
| 2026-05-20 12:00 |
00:27:25.94 |
+05:12:56.7 |
HIP 2165 |
12.23 |
| 2026-05-21 00:00 |
00:28:13.62 |
+05:18:51.2 |
HIP 2165 |
22.54 |
| 2026-05-21 12:00 |
00:29:01.25 |
+05:24:45.5 |
HIP 2369 |
18.59 |
| 2026-05-22 00:00 |
00:29:48.85 |
+05:30:39.4 |
HIP 2369 |
11.03 |
| 2026-05-22 12:00 |
00:30:36.40 |
+05:36:33.1 |
HIP 2369 |
15.75 |
| 2026-05-23 00:00 |
00:31:23.91 |
+05:42:26.4 |
HIP 2477 |
14.89 |
| 2026-05-23 12:00 |
00:32:11.38 |
+05:48:19.5 |
HIP 2477 |
14.18 |
| 2026-05-24 00:00 |
00:32:58.80 |
+05:54:12.2 |
HIP 2688 |
17.59 |
| 2026-05-24 12:00 |
00:33:46.19 |
+06:00:04.6 |
HIP 2688 |
6.08 |
| 2026-05-25 00:00 |
00:34:33.53 |
+06:05:56.7 |
HIP 2688 |
10.55 |
| 2026-05-25 12:00 |
00:35:20.83 |
+06:11:48.5 |
HIP 2831 |
12.97 |
| 2026-05-26 00:00 |
00:36:08.08 |
+06:17:40.0 |
HIP 2831 |
5.33 |
| 2026-05-26 12:00 |
00:36:55.29 |
+06:23:31.1 |
HIP 2831 |
15.25 |
| 2026-05-27 00:00 |
00:37:42.46 |
+06:29:21.9 |
HIP 2831 |
27.92 |
| 2026-05-27 12:00 |
00:38:29.59 |
+06:35:12.3 |
HIP 3033 |
33.91 |
| 2026-05-28 00:00 |
00:39:16.67 |
+06:41:02.4 |
HIP 3033 |
41.09 |
| 2026-05-28 12:00 |
00:40:03.71 |
+06:46:52.2 |
HIP 3382 |
43.45 |
| 2026-05-29 00:00 |
00:40:50.70 |
+06:52:41.6 |
HIP 3382 |
31.99 |
| 2026-05-29 12:00 |
00:41:37.65 |
+06:58:30.6 |
HIP 3382 |
22.35 |
| 2026-05-30 00:00 |
00:42:24.56 |
+07:04:19.3 |
HIP 3382 |
17.76 |
| 2026-05-30 12:00 |
00:43:11.42 |
+07:10:07.6 |
HIP 3382 |
21.67 |
| 2026-05-31 00:00 |
00:43:58.24 |
+07:15:55.6 |
HIP 3466 |
30.79 |
| 2026-05-31 12:00 |
00:44:45.01 |
+07:21:43.2 |
HIP 3466 |
25.32 |
| 2026-06-01 00:00 |
00:45:31.73 |
+07:27:30.4 |
HIP 3574 |
23.29 |
| 2026-06-01 12:00 |
00:46:18.41 |
+07:33:17.2 |
HIP 3574 |
19.80 |
| 2026-06-02 00:00 |
00:47:05.04 |
+07:39:03.7 |
HIP 3574 |
23.99 |