| Parameter |
Value |
| Designation |
C/2020 N1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2021-03-12T05:28:54.451200Z |
| Orbit solution date (soln_date, UTC) |
2022-04-08T01:42:44Z |
| Obs used |
856 |
| NEO |
- |
| M1 |
15.500 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2020-07-03T13:50:17.635200Z |
| Discovery magnitude (MPC) |
20.75 i |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2020-11-27.0000000 |
| e |
1.00050582 |
| q (au) |
1.320692 |
| a (au) |
-2610.973764 |
| i (deg) |
29.703772 |
| Ω (om, deg) |
279.981658 |
| ω (w, deg) |
186.772725 |
| M (ma, deg) |
-0.000777 |
Magnitude
Scatter + Global Linear
$$
M_a = (16.174 + 3.247\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
16.174 |
| n |
3.247 |
| gf |
1.000 |
| gb |
-0.862 |
| 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
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
16:54:29.32 |
-36:32:28.5 |
HIP 82623 |
14.58 |
| 2026-06-01 12:00 |
16:54:20.52 |
-36:32:13.1 |
HIP 82623 |
13.21 |
| 2026-06-02 00:00 |
16:54:11.72 |
-36:31:57.4 |
HIP 82623 |
11.95 |
| 2026-06-02 12:00 |
16:54:02.93 |
-36:31:41.5 |
HIP 82623 |
10.84 |
| 2026-06-03 00:00 |
16:53:54.12 |
-36:31:25.2 |
HIP 82623 |
9.94 |
| 2026-06-03 12:00 |
16:53:45.32 |
-36:31:08.7 |
HIP 82623 |
9.30 |
| 2026-06-04 00:00 |
16:53:36.52 |
-36:30:51.9 |
HIP 82623 |
8.98 |
| 2026-06-04 12:00 |
16:53:27.73 |
-36:30:34.8 |
HIP 82623 |
9.02 |
| 2026-06-05 00:00 |
16:53:18.93 |
-36:30:17.4 |
HIP 82623 |
9.40 |
| 2026-06-05 12:00 |
16:53:10.13 |
-36:29:59.7 |
HIP 82623 |
10.10 |
| 2026-06-06 00:00 |
16:53:01.34 |
-36:29:41.8 |
HIP 82623 |
11.05 |
| 2026-06-06 12:00 |
16:52:52.56 |
-36:29:23.6 |
HIP 82623 |
12.20 |
| 2026-06-07 00:00 |
16:52:43.78 |
-36:29:05.1 |
HIP 82623 |
13.49 |
| 2026-06-07 12:00 |
16:52:35.00 |
-36:28:46.4 |
HIP 82623 |
14.88 |
| 2026-06-08 00:00 |
16:52:26.24 |
-36:28:27.4 |
HIP 82623 |
16.35 |
| 2026-06-08 12:00 |
16:52:17.48 |
-36:28:08.1 |
HIP 82623 |
17.89 |
| 2026-06-09 00:00 |
16:52:08.73 |
-36:27:48.5 |
HIP 82623 |
19.47 |
| 2026-06-09 12:00 |
16:51:59.99 |
-36:27:28.7 |
HIP 82623 |
21.08 |
| 2026-06-10 00:00 |
16:51:51.26 |
-36:27:08.6 |
HIP 82447 |
21.13 |
| 2026-06-10 12:00 |
16:51:42.54 |
-36:26:48.3 |
HIP 82447 |
20.59 |
| 2026-06-11 00:00 |
16:51:33.83 |
-36:26:27.7 |
HIP 82447 |
20.21 |
| 2026-06-11 12:00 |
16:51:25.13 |
-36:26:06.8 |
HIP 82447 |
19.98 |
| 2026-06-12 00:00 |
16:51:16.45 |
-36:25:45.7 |
HIP 82360 |
18.55 |
| 2026-06-12 12:00 |
16:51:07.78 |
-36:25:24.3 |
HIP 82360 |
16.78 |
| 2026-06-13 00:00 |
16:50:59.13 |
-36:25:02.6 |
HIP 82360 |
15.03 |
| 2026-06-13 12:00 |
16:50:50.50 |
-36:24:40.7 |
HIP 82360 |
13.28 |
| 2026-06-14 00:00 |
16:50:41.88 |
-36:24:18.6 |
HIP 82360 |
11.54 |
| 2026-06-14 12:00 |
16:50:33.28 |
-36:23:56.2 |
HIP 82360 |
9.82 |
| 2026-06-15 00:00 |
16:50:24.70 |
-36:23:33.6 |
HIP 82360 |
8.12 |
| 2026-06-15 12:00 |
16:50:16.14 |
-36:23:10.7 |
HIP 82360 |
6.47 |
| 2026-06-16 00:00 |
16:50:07.60 |
-36:22:47.6 |
HIP 82360 |
4.90 |
| 2026-06-16 12:00 |
16:49:59.08 |
-36:22:24.2 |
HIP 82360 |
3.53 |
| 2026-06-17 00:00 |
16:49:50.58 |
-36:22:00.6 |
HIP 82360 |
2.66 |
| 2026-06-17 12:00 |
16:49:42.11 |
-36:21:36.8 |
HIP 82360 |
2.80 |
| 2026-06-18 00:00 |
16:49:33.66 |
-36:21:12.7 |
HIP 82360 |
3.84 |
| 2026-06-18 12:00 |
16:49:25.23 |
-36:20:48.4 |
HIP 82360 |
5.27 |
| 2026-06-19 00:00 |
16:49:16.84 |
-36:20:23.9 |
HIP 82360 |
6.84 |
| 2026-06-19 12:00 |
16:49:08.46 |
-36:19:59.1 |
HIP 82360 |
8.48 |
| 2026-06-20 00:00 |
16:49:00.12 |
-36:19:34.1 |
HIP 82360 |
10.15 |
| 2026-06-20 12:00 |
16:48:51.80 |
-36:19:08.9 |
HIP 82360 |
11.83 |
| 2026-06-21 00:00 |
16:48:43.51 |
-36:18:43.5 |
HIP 82311 |
12.90 |
| 2026-06-21 12:00 |
16:48:35.25 |
-36:18:17.9 |
HIP 82311 |
13.92 |
| 2026-06-22 00:00 |
16:48:27.03 |
-36:17:52.0 |
HIP 82311 |
15.06 |