| Parameter |
Value |
| Designation |
P/2024 R2 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-10-01T23:06:13.608000Z |
| Orbit solution date (soln_date, UTC) |
2025-02-13T09:13:03Z |
| Obs used |
46 |
| NEO |
- |
| M1 |
15.600 |
| K1 |
10.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-09-03T12:43:40.080000Z |
| Discovery magnitude (MPC) |
20.72 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2024-09-12.0000000 |
| e |
0.26821638 |
| q (au) |
2.303780 |
| a (au) |
3.148171 |
| i (deg) |
15.120781 |
| Ω (om, deg) |
193.061486 |
| ω (w, deg) |
203.974490 |
| M (ma, deg) |
356.477630 |
Magnitude
Scatter + Global Linear
$$
M_a = (16.480 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
16.480 |
| n |
2.000 |
| gf |
0.968 |
| gb |
-0.728 |
| k |
1.000 |
| δ90 |
9.955 |
| 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) |
| 2026-05-12 00:00 |
10:04:19.11 |
+04:11:25.6 |
HIP 49288 |
16.52 |
| 2026-05-12 12:00 |
10:04:32.13 |
+04:12:22.0 |
HIP 49288 |
19.34 |
| 2026-05-13 00:00 |
10:04:45.36 |
+04:13:16.7 |
HIP 49288 |
22.34 |
| 2026-05-13 12:00 |
10:04:58.80 |
+04:14:09.5 |
HIP 49288 |
25.47 |
| 2026-05-14 00:00 |
10:05:12.47 |
+04:15:00.7 |
HIP 49288 |
28.70 |
| 2026-05-14 12:00 |
10:05:26.34 |
+04:15:50.0 |
HIP 49288 |
32.02 |
| 2026-05-15 00:00 |
10:05:40.42 |
+04:16:37.7 |
HIP 49288 |
35.42 |
| 2026-05-15 12:00 |
10:05:54.72 |
+04:17:23.5 |
HIP 49288 |
38.88 |
| 2026-05-16 00:00 |
10:06:09.22 |
+04:18:07.7 |
HIP 49692 |
39.38 |
| 2026-05-16 12:00 |
10:06:23.93 |
+04:18:50.0 |
HIP 49692 |
35.68 |
| 2026-05-17 00:00 |
10:06:38.85 |
+04:19:30.7 |
HIP 49692 |
31.95 |
| 2026-05-17 12:00 |
10:06:53.97 |
+04:20:09.6 |
HIP 49692 |
28.20 |
| 2026-05-18 00:00 |
10:07:09.29 |
+04:20:46.8 |
HIP 49692 |
24.44 |
| 2026-05-18 12:00 |
10:07:24.82 |
+04:21:22.3 |
HIP 49692 |
20.68 |
| 2026-05-19 00:00 |
10:07:40.54 |
+04:21:56.1 |
HIP 49692 |
16.96 |
| 2026-05-19 12:00 |
10:07:56.46 |
+04:22:28.2 |
HIP 49692 |
13.36 |
| 2026-05-20 00:00 |
10:08:12.58 |
+04:22:58.6 |
HIP 49692 |
10.06 |
| 2026-05-20 12:00 |
10:08:28.89 |
+04:23:27.3 |
HIP 49692 |
7.54 |
| 2026-05-21 00:00 |
10:08:45.40 |
+04:23:54.3 |
HIP 49692 |
6.82 |
| 2026-05-21 12:00 |
10:09:02.09 |
+04:24:19.7 |
HIP 49692 |
8.45 |
| 2026-05-22 00:00 |
10:09:18.98 |
+04:24:43.3 |
HIP 49692 |
11.51 |
| 2026-05-22 12:00 |
10:09:36.05 |
+04:25:05.4 |
HIP 49692 |
15.20 |
| 2026-05-23 00:00 |
10:09:53.31 |
+04:25:25.8 |
HIP 49824 |
13.32 |
| 2026-05-23 12:00 |
10:10:10.75 |
+04:25:44.5 |
HIP 49824 |
11.87 |
| 2026-05-24 00:00 |
10:10:28.38 |
+04:26:01.6 |
HIP 49824 |
11.98 |
| 2026-05-24 12:00 |
10:10:46.19 |
+04:26:17.1 |
HIP 49824 |
13.64 |
| 2026-05-25 00:00 |
10:11:04.17 |
+04:26:31.0 |
HIP 49824 |
16.42 |
| 2026-05-25 12:00 |
10:11:22.34 |
+04:26:43.3 |
HIP 49824 |
19.89 |
| 2026-05-26 00:00 |
10:11:40.68 |
+04:26:54.0 |
HIP 50027 |
19.61 |
| 2026-05-26 12:00 |
10:11:59.19 |
+04:27:03.1 |
HIP 50027 |
15.71 |
| 2026-05-27 00:00 |
10:12:17.88 |
+04:27:10.6 |
HIP 50027 |
12.33 |
| 2026-05-27 12:00 |
10:12:36.74 |
+04:27:16.6 |
HIP 50027 |
10.03 |
| 2026-05-28 00:00 |
10:12:55.77 |
+04:27:21.0 |
HIP 50027 |
9.71 |
| 2026-05-28 12:00 |
10:13:14.97 |
+04:27:23.8 |
HIP 50027 |
11.57 |
| 2026-05-29 00:00 |
10:13:34.34 |
+04:27:25.1 |
HIP 50027 |
14.85 |
| 2026-05-29 12:00 |
10:13:53.87 |
+04:27:24.9 |
HIP 50027 |
18.86 |
| 2026-05-30 00:00 |
10:14:13.56 |
+04:27:23.1 |
HIP 50027 |
23.25 |
| 2026-05-30 12:00 |
10:14:33.42 |
+04:27:19.8 |
HIP 50266 |
27.38 |
| 2026-05-31 00:00 |
10:14:53.44 |
+04:27:15.0 |
HIP 50266 |
24.10 |
| 2026-05-31 12:00 |
10:15:13.62 |
+04:27:08.7 |
HIP 50266 |
21.45 |
| 2026-06-01 00:00 |
10:15:33.96 |
+04:27:00.9 |
HIP 50266 |
19.71 |
| 2026-06-01 12:00 |
10:15:54.46 |
+04:26:51.6 |
HIP 50266 |
19.17 |
| 2026-06-02 00:00 |
10:16:15.11 |
+04:26:40.8 |
HIP 50266 |
19.96 |