C/2022 P3 (ZTF)
| Parameter |
Value |
| Designation |
C/2022 P3 (ZTF) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2022-07-27T08:05:13.447680Z |
| Orbit solution date (soln_date, UTC) |
2023-04-21T18:43:32Z |
| Obs used |
327 |
| NEO |
- |
| M1 |
14.500 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2022-08-02T11:44:20.832000Z |
| Discovery magnitude (MPC) |
19.41 r |
| Discovery observatory (MPC) |
I41 · Palomar Mountain–ZTF |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2022-10-21.0000000 |
| e |
0.98947115 |
| q (au) |
2.561259 |
| a (au) |
243.261099 |
| i (deg) |
59.518749 |
| Ω (om, deg) |
72.234767 |
| ω (w, deg) |
0.090034 |
| M (ma, deg) |
0.022253 |
Magnitude
Scatter + Global Linear
$$
M_a = (13.366 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
13.366 |
| n |
2.000 |
| gf |
0.995 |
| gb |
-0.998 |
| 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
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
15:36:07.99 |
+29:14:21.1 |
HIP 76551 |
29.15 |
| 2026-02-03 12:00 |
15:36:11.27 |
+29:15:46.9 |
HIP 76551 |
27.81 |
| 2026-02-04 00:00 |
15:36:14.46 |
+29:17:13.1 |
HIP 76551 |
26.53 |
| 2026-02-04 12:00 |
15:36:17.54 |
+29:18:39.9 |
HIP 76551 |
25.29 |
| 2026-02-05 00:00 |
15:36:20.52 |
+29:20:07.1 |
HIP 76551 |
24.11 |
| 2026-02-05 12:00 |
15:36:23.40 |
+29:21:34.8 |
HIP 76551 |
23.00 |
| 2026-02-06 00:00 |
15:36:26.18 |
+29:23:02.9 |
HIP 76551 |
21.97 |
| 2026-02-06 12:00 |
15:36:28.86 |
+29:24:31.5 |
HIP 76551 |
21.03 |
| 2026-02-07 00:00 |
15:36:31.43 |
+29:26:00.5 |
HIP 76551 |
20.20 |
| 2026-02-07 12:00 |
15:36:33.89 |
+29:27:29.9 |
HIP 76551 |
19.48 |
| 2026-02-08 00:00 |
15:36:36.26 |
+29:28:59.8 |
HIP 76551 |
18.88 |
| 2026-02-08 12:00 |
15:36:38.52 |
+29:30:30.1 |
HIP 76551 |
18.43 |
| 2026-02-09 00:00 |
15:36:40.67 |
+29:32:00.7 |
HIP 76551 |
18.13 |
| 2026-02-09 12:00 |
15:36:42.72 |
+29:33:31.8 |
HIP 76551 |
17.99 |
| 2026-02-10 00:00 |
15:36:44.67 |
+29:35:03.2 |
HIP 76551 |
18.01 |
| 2026-02-10 12:00 |
15:36:46.51 |
+29:36:35.0 |
HIP 76551 |
18.19 |
| 2026-02-11 00:00 |
15:36:48.24 |
+29:38:07.2 |
HIP 76551 |
18.53 |
| 2026-02-11 12:00 |
15:36:49.87 |
+29:39:39.7 |
HIP 76551 |
19.02 |
| 2026-02-12 00:00 |
15:36:51.39 |
+29:41:12.6 |
HIP 76456 |
18.27 |
| 2026-02-12 12:00 |
15:36:52.81 |
+29:42:45.8 |
HIP 76456 |
16.72 |
| 2026-02-13 00:00 |
15:36:54.12 |
+29:44:19.4 |
HIP 76456 |
15.16 |
| 2026-02-13 12:00 |
15:36:55.32 |
+29:45:53.3 |
HIP 76456 |
13.60 |
| 2026-02-14 00:00 |
15:36:56.41 |
+29:47:27.4 |
HIP 76456 |
12.04 |
| 2026-02-14 12:00 |
15:36:57.40 |
+29:49:01.9 |
HIP 76456 |
10.48 |
| 2026-02-15 00:00 |
15:36:58.28 |
+29:50:36.7 |
HIP 76456 |
8.93 |
| 2026-02-15 12:00 |
15:36:59.05 |
+29:52:11.7 |
HIP 76456 |
7.39 |
| 2026-02-16 00:00 |
15:36:59.72 |
+29:53:47.0 |
HIP 76456 |
5.86 |
| 2026-02-16 12:00 |
15:37:00.27 |
+29:55:22.6 |
HIP 76456 |
4.37 |
| 2026-02-17 00:00 |
15:37:00.72 |
+29:56:58.4 |
HIP 76456 |
2.97 |
| 2026-02-17 12:00 |
15:37:01.06 |
+29:58:34.4 |
HIP 76456 |
1.90 |
| 2026-02-18 00:00 |
15:37:01.29 |
+30:00:10.7 |
HIP 76456 |
1.85 |
| 2026-02-18 12:00 |
15:37:01.41 |
+30:01:47.2 |
HIP 76456 |
2.89 |
| 2026-02-19 00:00 |
15:37:01.43 |
+30:03:23.9 |
HIP 76456 |
4.29 |
| 2026-02-19 12:00 |
15:37:01.33 |
+30:05:00.8 |
HIP 76456 |
5.80 |
| 2026-02-20 00:00 |
15:37:01.13 |
+30:06:37.8 |
HIP 76456 |
7.35 |
| 2026-02-20 12:00 |
15:37:00.82 |
+30:08:15.1 |
HIP 76456 |
8.92 |
| 2026-02-21 00:00 |
15:37:00.40 |
+30:09:52.5 |
HIP 76456 |
10.51 |
| 2026-02-21 12:00 |
15:36:59.87 |
+30:11:30.0 |
HIP 76456 |
12.10 |
| 2026-02-22 00:00 |
15:36:59.23 |
+30:13:07.7 |
HIP 76536 |
13.68 |
| 2026-02-22 12:00 |
15:36:58.48 |
+30:14:45.6 |
HIP 76536 |
14.71 |
| 2026-02-23 00:00 |
15:36:57.62 |
+30:16:23.5 |
HIP 76536 |
15.86 |
| 2026-02-23 12:00 |
15:36:56.66 |
+30:18:01.5 |
HIP 76536 |
17.10 |
| 2026-02-24 00:00 |
15:36:55.58 |
+30:19:39.7 |
HIP 76536 |
18.43 |