| Parameter |
Value |
| Designation |
P/2025 W3 (Kresken) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2025-03-17T01:23:50.372160Z |
| Orbit solution date (soln_date, UTC) |
2026-03-07T14:43:27Z |
| Obs used |
41 |
| NEO |
- |
| M1 |
18.700 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2025-11-29T03:49:57.043200Z |
| Discovery magnitude (MPC) |
22.10 G |
| Discovery observatory (MPC) |
Z84 · Calar Alto-Schmidt |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2025-12-18.0000000 |
| e |
0.18056761 |
| q (au) |
2.087186 |
| a (au) |
2.547112 |
| i (deg) |
9.744861 |
| Ω (om, deg) |
60.053173 |
| ω (w, deg) |
311.399120 |
| M (ma, deg) |
66.903591 |
Magnitude
Scatter + Global Linear
$$
M_a = (20.000 + 3.868\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
20.000 |
| n |
3.868 |
| gf |
1.000 |
| gb |
-0.821 |
| k |
0.800 |
| 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) |
| 2026-03-26 00:00 |
06:44:44.35 |
+32:41:26.3 |
HIP 32423 |
18.89 |
| 2026-03-26 12:00 |
06:45:13.28 |
+32:39:55.7 |
HIP 32423 |
12.80 |
| 2026-03-27 00:00 |
06:45:42.48 |
+32:38:24.6 |
HIP 32423 |
7.01 |
| 2026-03-27 12:00 |
06:46:11.97 |
+32:36:53.1 |
HIP 32423 |
3.82 |
| 2026-03-28 00:00 |
06:46:41.74 |
+32:35:21.2 |
HIP 32423 |
7.93 |
| 2026-03-28 12:00 |
06:47:11.78 |
+32:33:49.0 |
HIP 32423 |
14.00 |
| 2026-03-29 00:00 |
06:47:42.08 |
+32:32:16.3 |
HIP 32423 |
20.41 |
| 2026-03-29 12:00 |
06:48:12.66 |
+32:30:43.1 |
HIP 32740 |
19.53 |
| 2026-03-30 00:00 |
06:48:43.50 |
+32:29:09.6 |
HIP 32740 |
14.18 |
| 2026-03-30 12:00 |
06:49:14.60 |
+32:27:35.6 |
HIP 32740 |
10.47 |
| 2026-03-31 00:00 |
06:49:45.96 |
+32:26:01.2 |
HIP 32740 |
10.44 |
| 2026-03-31 12:00 |
06:50:17.57 |
+32:24:26.3 |
HIP 32740 |
14.20 |
| 2026-04-01 00:00 |
06:50:49.43 |
+32:22:51.1 |
HIP 32903 |
14.88 |
| 2026-04-01 12:00 |
06:51:21.54 |
+32:21:15.3 |
HIP 32903 |
11.70 |
| 2026-04-02 00:00 |
06:51:53.90 |
+32:19:39.2 |
HIP 32903 |
12.25 |
| 2026-04-02 12:00 |
06:52:26.50 |
+32:18:02.5 |
HIP 32903 |
16.22 |
| 2026-04-03 00:00 |
06:52:59.35 |
+32:16:25.5 |
HIP 33150 |
20.27 |
| 2026-04-03 12:00 |
06:53:32.43 |
+32:14:47.9 |
HIP 33150 |
17.53 |
| 2026-04-04 00:00 |
06:54:05.74 |
+32:13:09.9 |
HIP 33150 |
17.52 |
| 2026-04-04 12:00 |
06:54:39.29 |
+32:11:31.4 |
HIP 33150 |
20.30 |
| 2026-04-05 00:00 |
06:55:13.07 |
+32:09:52.5 |
HIP 33150 |
24.99 |
| 2026-04-05 12:00 |
06:55:47.08 |
+32:08:13.1 |
HIP 33430 |
19.02 |
| 2026-04-06 00:00 |
06:56:21.31 |
+32:06:33.1 |
HIP 33430 |
14.37 |
| 2026-04-06 12:00 |
06:56:55.76 |
+32:04:52.7 |
HIP 33430 |
12.70 |
| 2026-04-07 00:00 |
06:57:30.44 |
+32:03:11.8 |
HIP 33430 |
15.13 |
| 2026-04-07 12:00 |
06:58:05.33 |
+32:01:30.4 |
HIP 33430 |
20.28 |
| 2026-04-08 00:00 |
06:58:40.44 |
+31:59:48.5 |
HIP 33678 |
23.71 |
| 2026-04-08 12:00 |
06:59:15.76 |
+31:58:06.1 |
HIP 33678 |
18.50 |
| 2026-04-09 00:00 |
06:59:51.30 |
+31:56:23.2 |
HIP 33767 |
13.51 |
| 2026-04-09 12:00 |
07:00:27.04 |
+31:54:39.8 |
HIP 33767 |
9.49 |
| 2026-04-10 00:00 |
07:01:02.99 |
+31:52:55.8 |
HIP 33767 |
10.89 |
| 2026-04-10 12:00 |
07:01:39.14 |
+31:51:11.3 |
HIP 33767 |
16.46 |
| 2026-04-11 00:00 |
07:02:15.50 |
+31:49:26.3 |
HIP 33940 |
16.10 |
| 2026-04-11 12:00 |
07:02:52.05 |
+31:47:40.7 |
HIP 33940 |
14.11 |
| 2026-04-12 00:00 |
07:03:28.80 |
+31:45:54.6 |
HIP 33940 |
16.33 |
| 2026-04-12 12:00 |
07:04:05.75 |
+31:44:08.0 |
HIP 33940 |
21.55 |
| 2026-04-13 00:00 |
07:04:42.89 |
+31:42:20.8 |
HIP 34229 |
23.23 |
| 2026-04-13 12:00 |
07:05:20.23 |
+31:40:33.1 |
HIP 34229 |
17.91 |
| 2026-04-14 00:00 |
07:05:57.75 |
+31:38:44.7 |
HIP 34229 |
15.31 |
| 2026-04-14 12:00 |
07:06:35.46 |
+31:36:55.9 |
HIP 34229 |
16.83 |
| 2026-04-15 00:00 |
07:07:13.35 |
+31:35:06.4 |
HIP 34456 |
18.51 |
| 2026-04-15 12:00 |
07:07:51.42 |
+31:33:16.4 |
HIP 34456 |
10.42 |
| 2026-04-16 00:00 |
07:08:29.68 |
+31:31:25.8 |
HIP 34456 |
3.56 |