| Parameter |
Value |
| Designation |
347P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-09-11T07:07:18.474240Z |
| Orbit solution date (soln_date, UTC) |
2025-11-13T12:12:47Z |
| Obs used |
309 |
| NEO |
- |
| M1 |
17.400 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2019-06-17.0000000 |
| e |
0.38472732 |
| q (au) |
2.220496 |
| a (au) |
3.608962 |
| i (deg) |
11.747463 |
| Ω (om, deg) |
261.053847 |
| ω (w, deg) |
98.301249 |
| M (ma, deg) |
145.008703 |
Magnitude
Scatter + Global Linear
$$
M_a = (13.237 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
13.237 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
1.000 |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
10:02:36.69 |
-00:26:10.5 |
HIP 49280 |
19.87 |
| 2026-06-01 12:00 |
10:02:48.94 |
-00:26:12.9 |
HIP 49280 |
17.85 |
| 2026-06-02 00:00 |
10:03:01.33 |
-00:26:16.4 |
HIP 49280 |
16.15 |
| 2026-06-02 12:00 |
10:03:13.85 |
-00:26:21.0 |
HIP 49280 |
14.92 |
| 2026-06-03 00:00 |
10:03:26.52 |
-00:26:26.6 |
HIP 49280 |
14.30 |
| 2026-06-03 12:00 |
10:03:39.33 |
-00:26:33.4 |
HIP 49280 |
14.38 |
| 2026-06-04 00:00 |
10:03:52.27 |
-00:26:41.3 |
HIP 49280 |
15.19 |
| 2026-06-04 12:00 |
10:04:05.35 |
-00:26:50.2 |
HIP 49390 |
13.62 |
| 2026-06-05 00:00 |
10:04:18.57 |
-00:27:00.3 |
HIP 49390 |
10.32 |
| 2026-06-05 12:00 |
10:04:31.92 |
-00:27:11.4 |
HIP 49390 |
7.00 |
| 2026-06-06 00:00 |
10:04:45.41 |
-00:27:23.6 |
HIP 49390 |
3.68 |
| 2026-06-06 12:00 |
10:04:59.03 |
-00:27:36.9 |
HIP 49390 |
0.92 |
| 2026-06-07 00:00 |
10:05:12.78 |
-00:27:51.3 |
HIP 49390 |
3.41 |
| 2026-06-07 12:00 |
10:05:26.66 |
-00:28:06.8 |
HIP 49390 |
6.83 |
| 2026-06-08 00:00 |
10:05:40.67 |
-00:28:23.4 |
HIP 49390 |
10.32 |
| 2026-06-08 12:00 |
10:05:54.81 |
-00:28:41.0 |
HIP 49390 |
13.85 |
| 2026-06-09 00:00 |
10:06:09.09 |
-00:28:59.7 |
HIP 49390 |
17.43 |
| 2026-06-09 12:00 |
10:06:23.48 |
-00:29:19.5 |
HIP 49390 |
21.04 |
| 2026-06-10 00:00 |
10:06:38.01 |
-00:29:40.4 |
HIP 49600 |
19.11 |
| 2026-06-10 12:00 |
10:06:52.66 |
-00:30:02.3 |
HIP 49600 |
17.21 |
| 2026-06-11 00:00 |
10:07:07.44 |
-00:30:25.3 |
HIP 49641 |
14.67 |
| 2026-06-11 12:00 |
10:07:22.34 |
-00:30:49.3 |
HIP 49641 |
12.03 |
| 2026-06-12 00:00 |
10:07:37.37 |
-00:31:14.5 |
HIP 49641 |
10.12 |
| 2026-06-12 12:00 |
10:07:52.52 |
-00:31:40.7 |
HIP 49641 |
9.43 |
| 2026-06-13 00:00 |
10:08:07.79 |
-00:32:07.9 |
HIP 49641 |
10.25 |
| 2026-06-13 12:00 |
10:08:23.18 |
-00:32:36.2 |
HIP 49641 |
12.30 |
| 2026-06-14 00:00 |
10:08:38.69 |
-00:33:05.6 |
HIP 49641 |
15.13 |
| 2026-06-14 12:00 |
10:08:54.33 |
-00:33:36.0 |
HIP 49641 |
18.39 |
| 2026-06-15 00:00 |
10:09:10.07 |
-00:34:07.4 |
HIP 49641 |
21.91 |
| 2026-06-15 12:00 |
10:09:25.94 |
-00:34:39.9 |
HIP 49641 |
25.60 |
| 2026-06-16 00:00 |
10:09:41.92 |
-00:35:13.5 |
HIP 49641 |
29.40 |
| 2026-06-16 12:00 |
10:09:58.02 |
-00:35:48.1 |
HIP 49641 |
33.29 |
| 2026-06-17 00:00 |
10:10:14.23 |
-00:36:23.7 |
HIP 50005 |
33.93 |
| 2026-06-17 12:00 |
10:10:30.56 |
-00:37:00.4 |
HIP 50005 |
29.82 |
| 2026-06-18 00:00 |
10:10:46.99 |
-00:37:38.0 |
HIP 50005 |
25.70 |
| 2026-06-18 12:00 |
10:11:03.54 |
-00:38:16.7 |
HIP 50005 |
21.55 |
| 2026-06-19 00:00 |
10:11:20.20 |
-00:38:56.5 |
HIP 50005 |
17.41 |
| 2026-06-19 12:00 |
10:11:36.97 |
-00:39:37.2 |
HIP 50005 |
13.28 |
| 2026-06-20 00:00 |
10:11:53.84 |
-00:40:19.0 |
HIP 50005 |
9.23 |
| 2026-06-20 12:00 |
10:12:10.82 |
-00:41:01.7 |
HIP 50005 |
5.52 |
| 2026-06-21 00:00 |
10:12:27.91 |
-00:41:45.5 |
HIP 50005 |
3.60 |
| 2026-06-21 12:00 |
10:12:45.10 |
-00:42:30.3 |
HIP 50005 |
5.77 |
| 2026-06-22 00:00 |
10:13:02.40 |
-00:43:16.0 |
HIP 50005 |
9.61 |