C/2022 R6 (PANSTARRS)
| Parameter |
Value |
| Designation |
C/2022 R6 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-08-25T17:59:12.108480Z |
| Orbit solution date (soln_date, UTC) |
2026-01-13T08:12:18Z |
| Obs used |
1655 |
| NEO |
- |
| M1 |
4.400 |
| K1 |
10.250 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2022-09-14T13:46:32.822400Z |
| Discovery magnitude (MPC) |
20.04 i |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2024-10-06.0000000 |
| e |
1.00478571 |
| q (au) |
6.566208 |
| a (au) |
-1372.044900 |
| i (deg) |
57.019944 |
| Ω (om, deg) |
150.783586 |
| ω (w, deg) |
319.876845 |
| M (ma, deg) |
-0.006279 |
Magnitude
Scatter + Global Linear
$$
M_a = (3.823 + 5.116\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
3.823 |
| n |
5.116 |
| gf |
0.998 |
| gb |
-0.623 |
| k |
0.809 |
| δ90 |
8.212 |
| 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 |
08:42:19.44 |
-08:45:36.9 |
HIP 42670 |
14.14 |
| 2026-02-03 12:00 |
08:42:08.18 |
-08:42:28.8 |
HIP 42670 |
10.04 |
| 2026-02-04 00:00 |
08:41:56.95 |
-08:39:19.6 |
HIP 42670 |
6.04 |
| 2026-02-04 12:00 |
08:41:45.75 |
-08:36:09.1 |
HIP 42670 |
2.71 |
| 2026-02-05 00:00 |
08:41:34.57 |
-08:32:57.5 |
HIP 42670 |
3.71 |
| 2026-02-05 12:00 |
08:41:23.42 |
-08:29:44.8 |
HIP 42670 |
7.48 |
| 2026-02-06 00:00 |
08:41:12.29 |
-08:26:31.0 |
HIP 42670 |
11.58 |
| 2026-02-06 12:00 |
08:41:01.20 |
-08:23:16.1 |
HIP 42676 |
14.72 |
| 2026-02-07 00:00 |
08:40:50.15 |
-08:20:00.1 |
HIP 42676 |
16.02 |
| 2026-02-07 12:00 |
08:40:39.12 |
-08:16:43.0 |
HIP 42676 |
18.23 |
| 2026-02-08 00:00 |
08:40:28.14 |
-08:13:24.9 |
HIP 42676 |
21.08 |
| 2026-02-08 12:00 |
08:40:17.19 |
-08:10:05.7 |
HIP 42569 |
22.15 |
| 2026-02-09 00:00 |
08:40:06.29 |
-08:06:45.5 |
HIP 42569 |
19.79 |
| 2026-02-09 12:00 |
08:39:55.43 |
-08:03:24.3 |
HIP 42569 |
18.13 |
| 2026-02-10 00:00 |
08:39:44.61 |
-08:00:02.0 |
HIP 42569 |
17.39 |
| 2026-02-10 12:00 |
08:39:33.84 |
-07:56:38.9 |
HIP 42569 |
17.67 |
| 2026-02-11 00:00 |
08:39:23.12 |
-07:53:14.7 |
HIP 42569 |
18.94 |
| 2026-02-11 12:00 |
08:39:12.45 |
-07:49:49.6 |
HIP 42569 |
21.02 |
| 2026-02-12 00:00 |
08:39:01.83 |
-07:46:23.6 |
HIP 42569 |
23.71 |
| 2026-02-12 12:00 |
08:38:51.27 |
-07:42:56.6 |
HIP 42569 |
26.81 |
| 2026-02-13 00:00 |
08:38:40.76 |
-07:39:28.8 |
HIP 42260 |
25.95 |
| 2026-02-13 12:00 |
08:38:30.31 |
-07:36:00.1 |
HIP 42260 |
25.17 |
| 2026-02-14 00:00 |
08:38:19.92 |
-07:32:30.5 |
HIP 42252 |
25.03 |
| 2026-02-14 12:00 |
08:38:09.60 |
-07:29:00.0 |
HIP 42252 |
21.08 |
| 2026-02-15 00:00 |
08:37:59.33 |
-07:25:28.8 |
HIP 42252 |
17.32 |
| 2026-02-15 12:00 |
08:37:49.13 |
-07:21:56.7 |
HIP 42252 |
13.91 |
| 2026-02-16 00:00 |
08:37:39.00 |
-07:18:23.9 |
HIP 42252 |
11.20 |
| 2026-02-16 12:00 |
08:37:28.94 |
-07:14:50.3 |
HIP 42252 |
9.78 |
| 2026-02-17 00:00 |
08:37:18.95 |
-07:11:15.9 |
HIP 42252 |
10.19 |
| 2026-02-17 12:00 |
08:37:09.04 |
-07:07:40.8 |
HIP 42252 |
12.26 |
| 2026-02-18 00:00 |
08:36:59.20 |
-07:04:04.9 |
HIP 42252 |
15.33 |
| 2026-02-18 12:00 |
08:36:49.43 |
-07:00:28.4 |
HIP 42252 |
18.92 |
| 2026-02-19 00:00 |
08:36:39.74 |
-06:56:51.2 |
HIP 42333 |
19.48 |
| 2026-02-19 12:00 |
08:36:30.14 |
-06:53:13.3 |
HIP 42333 |
20.51 |
| 2026-02-20 00:00 |
08:36:20.61 |
-06:49:34.8 |
HIP 42333 |
22.34 |
| 2026-02-20 12:00 |
08:36:11.17 |
-06:45:55.7 |
HIP 42292 |
24.68 |
| 2026-02-21 00:00 |
08:36:01.81 |
-06:42:16.0 |
HIP 42292 |
24.08 |
| 2026-02-21 12:00 |
08:35:52.54 |
-06:38:35.7 |
HIP 42292 |
24.24 |
| 2026-02-22 00:00 |
08:35:43.36 |
-06:34:54.8 |
HIP 42292 |
25.12 |
| 2026-02-22 12:00 |
08:35:34.26 |
-06:31:13.4 |
HIP 42025 |
23.46 |
| 2026-02-23 00:00 |
08:35:25.26 |
-06:27:31.5 |
HIP 42025 |
21.15 |
| 2026-02-23 12:00 |
08:35:16.35 |
-06:23:49.0 |
HIP 42025 |
19.57 |
| 2026-02-24 00:00 |
08:35:07.54 |
-06:20:06.1 |
HIP 42025 |
18.89 |