| 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 |
1.000 |
| gb |
-0.999 |
| k |
1.000 |
| 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
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
15:04:33.93 |
+26:07:04.6 |
HIP 73700 |
11.09 |
| 2026-09-20 12:00 |
15:04:41.12 |
+26:05:13.2 |
HIP 73700 |
12.00 |
| 2026-09-21 00:00 |
15:04:48.37 |
+26:03:22.1 |
HIP 73700 |
13.31 |
| 2026-09-21 12:00 |
15:04:55.67 |
+26:01:31.5 |
HIP 73700 |
14.93 |
| 2026-09-22 00:00 |
15:05:03.02 |
+25:59:41.3 |
HIP 73700 |
16.77 |
| 2026-09-22 12:00 |
15:05:10.42 |
+25:57:51.5 |
HIP 73700 |
18.77 |
| 2026-09-23 00:00 |
15:05:17.88 |
+25:56:02.2 |
HIP 73700 |
20.88 |
| 2026-09-23 12:00 |
15:05:25.38 |
+25:54:13.2 |
HIP 73700 |
23.07 |
| 2026-09-24 00:00 |
15:05:32.94 |
+25:52:24.8 |
HIP 73999 |
24.01 |
| 2026-09-24 12:00 |
15:05:40.55 |
+25:50:36.7 |
HIP 73999 |
22.52 |
| 2026-09-25 00:00 |
15:05:48.20 |
+25:48:49.2 |
HIP 73999 |
21.19 |
| 2026-09-25 12:00 |
15:05:55.91 |
+25:47:02.0 |
HIP 73999 |
20.08 |
| 2026-09-26 00:00 |
15:06:03.66 |
+25:45:15.4 |
HIP 73999 |
19.21 |
| 2026-09-26 12:00 |
15:06:11.46 |
+25:43:29.1 |
HIP 73999 |
18.62 |
| 2026-09-27 00:00 |
15:06:19.31 |
+25:41:43.4 |
HIP 73999 |
18.34 |
| 2026-09-27 12:00 |
15:06:27.21 |
+25:39:58.1 |
HIP 73999 |
18.38 |
| 2026-09-28 00:00 |
15:06:35.15 |
+25:38:13.3 |
HIP 73999 |
18.75 |
| 2026-09-28 12:00 |
15:06:43.14 |
+25:36:28.9 |
HIP 73999 |
19.42 |
| 2026-09-29 00:00 |
15:06:51.18 |
+25:34:45.0 |
HIP 73999 |
20.37 |
| 2026-09-29 12:00 |
15:06:59.26 |
+25:33:01.6 |
HIP 73999 |
21.56 |
| 2026-09-30 00:00 |
15:07:07.39 |
+25:31:18.7 |
HIP 73999 |
22.95 |
| 2026-09-30 12:00 |
15:07:15.56 |
+25:29:36.3 |
HIP 73999 |
24.51 |
| 2026-10-01 00:00 |
15:07:23.78 |
+25:27:54.4 |
HIP 73999 |
26.21 |
| 2026-10-01 12:00 |
15:07:32.04 |
+25:26:12.9 |
HIP 74096 |
24.38 |
| 2026-10-02 00:00 |
15:07:40.34 |
+25:24:32.0 |
HIP 74096 |
21.92 |
| 2026-10-02 12:00 |
15:07:48.69 |
+25:22:51.6 |
HIP 74096 |
19.48 |
| 2026-10-03 00:00 |
15:07:57.08 |
+25:21:11.6 |
HIP 74096 |
17.06 |
| 2026-10-03 12:00 |
15:08:05.51 |
+25:19:32.2 |
HIP 74096 |
14.69 |
| 2026-10-04 00:00 |
15:08:13.98 |
+25:17:53.3 |
HIP 74096 |
12.37 |
| 2026-10-04 12:00 |
15:08:22.50 |
+25:16:14.9 |
HIP 74096 |
10.17 |
| 2026-10-05 00:00 |
15:08:31.05 |
+25:14:37.1 |
HIP 74096 |
8.16 |
| 2026-10-05 12:00 |
15:08:39.65 |
+25:12:59.8 |
HIP 74096 |
6.54 |
| 2026-10-06 00:00 |
15:08:48.28 |
+25:11:23.0 |
HIP 74096 |
5.65 |
| 2026-10-06 12:00 |
15:08:56.95 |
+25:09:46.7 |
HIP 74096 |
5.84 |
| 2026-10-07 00:00 |
15:09:05.67 |
+25:08:11.0 |
HIP 74096 |
7.01 |
| 2026-10-07 12:00 |
15:09:14.42 |
+25:06:35.8 |
HIP 74096 |
8.80 |
| 2026-10-08 00:00 |
15:09:23.21 |
+25:05:01.2 |
HIP 74096 |
10.89 |
| 2026-10-08 12:00 |
15:09:32.03 |
+25:03:27.1 |
HIP 74096 |
13.15 |
| 2026-10-09 00:00 |
15:09:40.90 |
+25:01:53.6 |
HIP 74096 |
15.50 |
| 2026-10-09 12:00 |
15:09:49.80 |
+25:00:20.6 |
HIP 74256 |
17.85 |
| 2026-10-10 00:00 |
15:09:58.73 |
+24:58:48.2 |
HIP 74256 |
18.22 |
| 2026-10-10 12:00 |
15:10:07.70 |
+24:57:16.4 |
HIP 74183 |
18.83 |
| 2026-10-11 00:00 |
15:10:16.70 |
+24:55:45.2 |
HIP 74183 |
18.59 |