P/2025 W3 (Kresken)
| Parameter |
Value |
| Designation |
P/2025 W3 (Kresken) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2025-03-16T23:03:09.472320Z |
| Orbit solution date (soln_date, UTC) |
2026-01-07T15:42:54Z |
| Obs used |
36 |
| NEO |
- |
| M1 |
16.600 |
| K1 |
10.000 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2025-12-13.0000000 |
| e |
0.18070343 |
| q (au) |
2.087268 |
| a (au) |
2.547634 |
| i (deg) |
9.749426 |
| Ω (om, deg) |
60.070321 |
| ω (w, deg) |
311.364499 |
| M (ma, deg) |
65.694804 |
Magnitude
Scatter + Global Linear
$$
M_a = (12.458 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
12.458 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.503 |
| 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) |
| 2026-02-03 00:00 |
06:30:03.44 |
+34:33:22.0 |
HIP 31049 |
19.79 |
| 2026-02-03 12:00 |
06:29:47.66 |
+34:32:59.7 |
HIP 30818 |
16.57 |
| 2026-02-04 00:00 |
06:29:32.41 |
+34:32:35.8 |
HIP 30818 |
13.42 |
| 2026-02-04 12:00 |
06:29:17.67 |
+34:32:10.3 |
HIP 30818 |
10.37 |
| 2026-02-05 00:00 |
06:29:03.45 |
+34:31:43.2 |
HIP 30818 |
7.43 |
| 2026-02-05 12:00 |
06:28:49.75 |
+34:31:14.7 |
HIP 30818 |
4.61 |
| 2026-02-06 00:00 |
06:28:36.58 |
+34:30:44.7 |
HIP 30818 |
1.97 |
| 2026-02-06 12:00 |
06:28:23.93 |
+34:30:13.2 |
HIP 30818 |
1.23 |
| 2026-02-07 00:00 |
06:28:11.81 |
+34:29:40.3 |
HIP 30818 |
3.53 |
| 2026-02-07 12:00 |
06:28:00.21 |
+34:29:06.1 |
HIP 30818 |
5.94 |
| 2026-02-08 00:00 |
06:27:49.14 |
+34:28:30.5 |
HIP 30818 |
8.27 |
| 2026-02-08 12:00 |
06:27:38.60 |
+34:27:53.6 |
HIP 30818 |
10.51 |
| 2026-02-09 00:00 |
06:27:28.58 |
+34:27:15.4 |
HIP 30818 |
12.65 |
| 2026-02-09 12:00 |
06:27:19.10 |
+34:26:35.9 |
HIP 30818 |
14.70 |
| 2026-02-10 00:00 |
06:27:10.14 |
+34:25:55.3 |
HIP 30818 |
16.65 |
| 2026-02-10 12:00 |
06:27:01.71 |
+34:25:13.4 |
HIP 30818 |
18.50 |
| 2026-02-11 00:00 |
06:26:53.82 |
+34:24:30.3 |
HIP 30818 |
20.25 |
| 2026-02-11 12:00 |
06:26:46.45 |
+34:23:46.1 |
HIP 30818 |
21.91 |
| 2026-02-12 00:00 |
06:26:39.60 |
+34:23:00.8 |
HIP 30818 |
23.47 |
| 2026-02-12 12:00 |
06:26:33.29 |
+34:22:14.4 |
HIP 30818 |
24.95 |
| 2026-02-13 00:00 |
06:26:27.51 |
+34:21:26.9 |
HIP 30818 |
26.32 |
| 2026-02-13 12:00 |
06:26:22.25 |
+34:20:38.4 |
HIP 30818 |
27.61 |
| 2026-02-14 00:00 |
06:26:17.51 |
+34:19:48.8 |
HIP 30818 |
28.81 |
| 2026-02-14 12:00 |
06:26:13.31 |
+34:18:58.3 |
HIP 30818 |
29.91 |
| 2026-02-15 00:00 |
06:26:09.62 |
+34:18:06.8 |
HIP 30818 |
30.93 |
| 2026-02-15 12:00 |
06:26:06.47 |
+34:17:14.4 |
HIP 30403 |
31.53 |
| 2026-02-16 00:00 |
06:26:03.83 |
+34:16:21.0 |
HIP 30403 |
30.96 |
| 2026-02-16 12:00 |
06:26:01.71 |
+34:15:26.8 |
HIP 30403 |
30.53 |
| 2026-02-17 00:00 |
06:26:00.12 |
+34:14:31.7 |
HIP 30403 |
30.23 |
| 2026-02-17 12:00 |
06:25:59.04 |
+34:13:35.7 |
HIP 30403 |
30.07 |
| 2026-02-18 00:00 |
06:25:58.48 |
+34:12:38.9 |
HIP 30403 |
30.04 |
| 2026-02-18 12:00 |
06:25:58.43 |
+34:11:41.3 |
HIP 30403 |
30.16 |
| 2026-02-19 00:00 |
06:25:58.90 |
+34:10:42.9 |
HIP 30403 |
30.41 |
| 2026-02-19 12:00 |
06:25:59.87 |
+34:09:43.7 |
HIP 30403 |
30.79 |
| 2026-02-20 00:00 |
06:26:01.36 |
+34:08:43.8 |
HIP 30403 |
31.31 |
| 2026-02-20 12:00 |
06:26:03.35 |
+34:07:43.2 |
HIP 30403 |
31.96 |
| 2026-02-21 00:00 |
06:26:05.85 |
+34:06:41.8 |
HIP 30403 |
32.73 |
| 2026-02-21 12:00 |
06:26:08.84 |
+34:05:39.8 |
HIP 30403 |
33.63 |
| 2026-02-22 00:00 |
06:26:12.34 |
+34:04:37.0 |
HIP 30403 |
34.65 |
| 2026-02-22 12:00 |
06:26:16.33 |
+34:03:33.7 |
HIP 30403 |
35.79 |
| 2026-02-23 00:00 |
06:26:20.82 |
+34:02:29.6 |
HIP 30403 |
37.04 |
| 2026-02-23 12:00 |
06:26:25.79 |
+34:01:25.0 |
HIP 30818 |
37.94 |
| 2026-02-24 00:00 |
06:26:31.25 |
+34:00:19.7 |
HIP 30818 |
38.02 |