| 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 |
1.000 |
| gb |
-1.000 |
| k |
1.000 |
| 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) |
| 2026-09-25 00:00 |
12:11:49.41 |
-03:12:47.5 |
HIP 59532 |
12.54 |
| 2026-09-25 12:00 |
12:12:23.20 |
-03:15:39.3 |
HIP 59532 |
10.63 |
| 2026-09-26 00:00 |
12:12:56.98 |
-03:18:31.2 |
HIP 59532 |
15.08 |
| 2026-09-26 12:00 |
12:13:30.76 |
-03:21:23.1 |
HIP 59532 |
22.37 |
| 2026-09-27 00:00 |
12:14:04.53 |
-03:24:15.0 |
HIP 59532 |
30.52 |
| 2026-09-27 12:00 |
12:14:38.29 |
-03:27:06.8 |
HIP 59843 |
27.78 |
| 2026-09-28 00:00 |
12:15:12.05 |
-03:29:58.6 |
HIP 59843 |
22.62 |
| 2026-09-28 12:00 |
12:15:45.80 |
-03:32:50.4 |
HIP 59843 |
20.24 |
| 2026-09-29 00:00 |
12:16:19.55 |
-03:35:42.2 |
HIP 59843 |
21.59 |
| 2026-09-29 12:00 |
12:16:53.29 |
-03:38:33.9 |
HIP 59843 |
26.09 |
| 2026-09-30 00:00 |
12:17:27.02 |
-03:41:25.6 |
HIP 59984 |
18.79 |
| 2026-09-30 12:00 |
12:18:00.74 |
-03:44:17.3 |
HIP 59984 |
12.83 |
| 2026-10-01 00:00 |
12:18:34.46 |
-03:47:08.9 |
HIP 59984 |
11.58 |
| 2026-10-01 12:00 |
12:19:08.16 |
-03:50:00.4 |
HIP 59984 |
16.17 |
| 2026-10-02 00:00 |
12:19:41.86 |
-03:52:51.9 |
HIP 60194 |
15.88 |
| 2026-10-02 12:00 |
12:20:15.55 |
-03:55:43.3 |
HIP 60194 |
7.14 |
| 2026-10-03 00:00 |
12:20:49.23 |
-03:58:34.7 |
HIP 60194 |
2.71 |
| 2026-10-03 12:00 |
12:21:22.90 |
-04:01:25.9 |
HIP 60194 |
11.00 |
| 2026-10-04 00:00 |
12:21:56.56 |
-04:04:17.1 |
HIP 60298 |
18.94 |
| 2026-10-04 12:00 |
12:22:30.21 |
-04:07:08.2 |
HIP 60298 |
18.77 |
| 2026-10-05 00:00 |
12:23:03.85 |
-04:09:59.2 |
HIP 60298 |
22.42 |
| 2026-10-05 12:00 |
12:23:37.47 |
-04:12:50.2 |
HIP 60574 |
20.35 |
| 2026-10-06 00:00 |
12:24:11.09 |
-04:15:41.0 |
HIP 60574 |
12.15 |
| 2026-10-06 12:00 |
12:24:44.69 |
-04:18:31.7 |
HIP 60574 |
6.17 |
| 2026-10-07 00:00 |
12:25:18.27 |
-04:21:22.2 |
HIP 60574 |
9.21 |
| 2026-10-07 12:00 |
12:25:51.85 |
-04:24:12.7 |
HIP 60680 |
6.19 |
| 2026-10-08 00:00 |
12:26:25.41 |
-04:27:03.0 |
HIP 60680 |
4.63 |
| 2026-10-08 12:00 |
12:26:58.95 |
-04:29:53.2 |
HIP 60680 |
12.67 |
| 2026-10-09 00:00 |
12:27:32.48 |
-04:32:43.2 |
HIP 60813 |
6.35 |
| 2026-10-09 12:00 |
12:28:05.99 |
-04:35:33.1 |
HIP 60813 |
3.84 |
| 2026-10-10 00:00 |
12:28:39.49 |
-04:38:22.8 |
HIP 60813 |
12.02 |
| 2026-10-10 12:00 |
12:29:12.97 |
-04:41:12.4 |
HIP 60813 |
20.72 |
| 2026-10-11 00:00 |
12:29:46.43 |
-04:44:01.8 |
HIP 60813 |
29.48 |
| 2026-10-11 12:00 |
12:30:19.87 |
-04:46:51.0 |
HIP 61134 |
25.53 |
| 2026-10-12 00:00 |
12:30:53.30 |
-04:49:40.0 |
HIP 61134 |
17.61 |
| 2026-10-12 12:00 |
12:31:26.70 |
-04:52:28.9 |
HIP 61134 |
11.09 |
| 2026-10-13 00:00 |
12:32:00.09 |
-04:55:17.5 |
HIP 61134 |
9.50 |
| 2026-10-13 12:00 |
12:32:33.45 |
-04:58:06.0 |
HIP 61134 |
14.53 |
| 2026-10-14 00:00 |
12:33:06.80 |
-05:00:54.2 |
HIP 61322 |
17.14 |
| 2026-10-14 12:00 |
12:33:40.12 |
-05:03:42.2 |
HIP 61322 |
11.03 |
| 2026-10-15 00:00 |
12:34:13.42 |
-05:06:30.0 |
HIP 61322 |
10.15 |
| 2026-10-15 12:00 |
12:34:46.69 |
-05:09:17.6 |
HIP 61400 |
1.67 |
| 2026-10-16 00:00 |
12:35:19.95 |
-05:12:05.0 |
HIP 61400 |
7.18 |