| Parameter |
Value |
| Designation |
P/2024 R1 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-06-15T15:55:12.869760Z |
| Orbit solution date (soln_date, UTC) |
2024-10-11T15:13:32Z |
| Obs used |
46 |
| NEO |
- |
| M1 |
19.200 |
| K1 |
5.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-09-01T13:19:48.633600Z |
| Discovery magnitude (MPC) |
21.36 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2024-09-08.0000000 |
| e |
0.49291197 |
| q (au) |
1.749729 |
| a (au) |
3.450542 |
| i (deg) |
12.736343 |
| Ω (om, deg) |
84.982836 |
| ω (w, deg) |
230.577928 |
| M (ma, deg) |
12.968491 |
Magnitude
Scatter + Global Linear
$$
M_a = (17.458 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
17.458 |
| n |
6.000 |
| gf |
0.999 |
| gb |
-0.541 |
| 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 |
06:41:45.14 |
+26:54:42.6 |
HIP 32044 |
10.20 |
| 2026-06-01 12:00 |
06:42:14.88 |
+26:54:28.4 |
HIP 32044 |
12.64 |
| 2026-06-02 00:00 |
06:42:44.66 |
+26:54:13.8 |
HIP 32194 |
7.06 |
| 2026-06-02 12:00 |
06:43:14.47 |
+26:53:58.9 |
HIP 32194 |
2.43 |
| 2026-06-03 00:00 |
06:43:44.32 |
+26:53:43.7 |
HIP 32194 |
7.11 |
| 2026-06-03 12:00 |
06:44:14.22 |
+26:53:28.3 |
HIP 32194 |
13.57 |
| 2026-06-04 00:00 |
06:44:44.14 |
+26:53:12.5 |
HIP 32194 |
20.18 |
| 2026-06-04 12:00 |
06:45:14.11 |
+26:52:56.4 |
HIP 32194 |
26.83 |
| 2026-06-05 00:00 |
06:45:44.11 |
+26:52:40.0 |
HIP 32518 |
27.11 |
| 2026-06-05 12:00 |
06:46:14.14 |
+26:52:23.4 |
HIP 32518 |
22.59 |
| 2026-06-06 00:00 |
06:46:44.21 |
+26:52:06.4 |
HIP 32518 |
19.36 |
| 2026-06-06 12:00 |
06:47:14.31 |
+26:51:49.1 |
HIP 32518 |
18.16 |
| 2026-06-07 00:00 |
06:47:44.44 |
+26:51:31.5 |
HIP 32518 |
19.37 |
| 2026-06-07 12:00 |
06:48:14.61 |
+26:51:13.7 |
HIP 32518 |
22.61 |
| 2026-06-08 00:00 |
06:48:44.80 |
+26:50:55.5 |
HIP 32777 |
19.65 |
| 2026-06-08 12:00 |
06:49:15.03 |
+26:50:37.0 |
HIP 32777 |
14.28 |
| 2026-06-09 00:00 |
06:49:45.29 |
+26:50:18.2 |
HIP 32777 |
10.62 |
| 2026-06-09 12:00 |
06:50:15.57 |
+26:49:59.1 |
HIP 32777 |
10.64 |
| 2026-06-10 00:00 |
06:50:45.89 |
+26:49:39.7 |
HIP 32777 |
14.32 |
| 2026-06-10 12:00 |
06:51:16.23 |
+26:49:20.1 |
HIP 32922 |
10.27 |
| 2026-06-11 00:00 |
06:51:46.60 |
+26:49:00.1 |
HIP 32922 |
9.69 |
| 2026-06-11 12:00 |
06:52:16.99 |
+26:48:39.8 |
HIP 32922 |
13.22 |
| 2026-06-12 00:00 |
06:52:47.42 |
+26:48:19.2 |
HIP 32922 |
18.65 |
| 2026-06-12 12:00 |
06:53:17.86 |
+26:47:58.3 |
HIP 33194 |
22.67 |
| 2026-06-13 00:00 |
06:53:48.33 |
+26:47:37.2 |
HIP 33194 |
18.22 |
| 2026-06-13 12:00 |
06:54:18.82 |
+26:47:15.7 |
HIP 33194 |
15.59 |
| 2026-06-14 00:00 |
06:54:49.34 |
+26:46:53.9 |
HIP 33194 |
15.72 |
| 2026-06-14 12:00 |
06:55:19.88 |
+26:46:31.9 |
HIP 33194 |
18.55 |
| 2026-06-15 00:00 |
06:55:50.43 |
+26:46:09.5 |
HIP 33194 |
23.12 |
| 2026-06-15 12:00 |
06:56:21.01 |
+26:45:46.9 |
HIP 33501 |
20.63 |
| 2026-06-16 00:00 |
06:56:51.60 |
+26:45:23.9 |
HIP 33501 |
14.52 |
| 2026-06-16 12:00 |
06:57:22.22 |
+26:45:00.7 |
HIP 33501 |
9.46 |
| 2026-06-17 00:00 |
06:57:52.85 |
+26:44:37.2 |
HIP 33501 |
7.87 |
| 2026-06-17 12:00 |
06:58:23.49 |
+26:44:13.4 |
HIP 33501 |
11.32 |
| 2026-06-18 00:00 |
06:58:54.16 |
+26:43:49.3 |
HIP 33506 |
16.71 |
| 2026-06-18 12:00 |
06:59:24.83 |
+26:43:24.9 |
HIP 33712 |
14.51 |
| 2026-06-19 00:00 |
06:59:55.52 |
+26:43:00.3 |
HIP 33712 |
10.61 |
| 2026-06-19 12:00 |
07:00:26.23 |
+26:42:35.3 |
HIP 33712 |
10.43 |
| 2026-06-20 00:00 |
07:00:56.94 |
+26:42:10.1 |
HIP 33712 |
14.12 |
| 2026-06-20 12:00 |
07:01:27.67 |
+26:41:44.6 |
HIP 33712 |
19.61 |
| 2026-06-21 00:00 |
07:01:58.40 |
+26:41:18.9 |
HIP 33831 |
24.86 |
| 2026-06-21 12:00 |
07:02:29.15 |
+26:40:52.8 |
HIP 34030 |
24.62 |
| 2026-06-22 00:00 |
07:02:59.91 |
+26:40:26.5 |
HIP 34030 |
21.53 |