| Parameter |
Value |
| Designation |
448P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2022-09-08T00:31:25.878720Z |
| Orbit solution date (soln_date, UTC) |
2024-08-11T00:12:25Z |
| Obs used |
184 |
| NEO |
- |
| M1 |
18.000 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2008-10-01T09:02:51.072000Z |
| Discovery magnitude (MPC) |
20.00 V |
| Discovery observatory (MPC) |
703 · University of Arizona Catalina Sky Survey |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2019-04-24.0000000 |
| e |
0.41897178 |
| q (au) |
2.109134 |
| a (au) |
3.630003 |
| i (deg) |
12.152893 |
| Ω (om, deg) |
161.780755 |
| ω (w, deg) |
219.028807 |
| M (ma, deg) |
184.282775 |
Magnitude
Scatter + Global Linear
$$
M_a = (19.465 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
19.465 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.629 |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
13:17:39.22 |
+02:26:03.7 |
HIP 64802 |
18.78 |
| 2026-06-01 12:00 |
13:17:31.85 |
+02:26:17.3 |
HIP 64802 |
17.90 |
| 2026-06-02 00:00 |
13:17:24.66 |
+02:26:29.6 |
HIP 64802 |
17.18 |
| 2026-06-02 12:00 |
13:17:17.65 |
+02:26:40.6 |
HIP 64802 |
16.62 |
| 2026-06-03 00:00 |
13:17:10.80 |
+02:26:50.2 |
HIP 64802 |
16.22 |
| 2026-06-03 12:00 |
13:17:04.14 |
+02:26:58.5 |
HIP 64802 |
15.98 |
| 2026-06-04 00:00 |
13:16:57.65 |
+02:27:05.4 |
HIP 64802 |
15.90 |
| 2026-06-04 12:00 |
13:16:51.33 |
+02:27:11.0 |
HIP 64802 |
15.96 |
| 2026-06-05 00:00 |
13:16:45.20 |
+02:27:15.3 |
HIP 64802 |
16.15 |
| 2026-06-05 12:00 |
13:16:39.24 |
+02:27:18.3 |
HIP 64802 |
16.44 |
| 2026-06-06 00:00 |
13:16:33.45 |
+02:27:19.9 |
HIP 64802 |
16.83 |
| 2026-06-06 12:00 |
13:16:27.85 |
+02:27:20.2 |
HIP 64802 |
17.30 |
| 2026-06-07 00:00 |
13:16:22.42 |
+02:27:19.2 |
HIP 64802 |
17.82 |
| 2026-06-07 12:00 |
13:16:17.17 |
+02:27:16.9 |
HIP 64802 |
18.39 |
| 2026-06-08 00:00 |
13:16:12.10 |
+02:27:13.3 |
HIP 64802 |
18.99 |
| 2026-06-08 12:00 |
13:16:07.21 |
+02:27:08.3 |
HIP 64802 |
19.61 |
| 2026-06-09 00:00 |
13:16:02.50 |
+02:27:02.1 |
HIP 64802 |
20.24 |
| 2026-06-09 12:00 |
13:15:57.97 |
+02:26:54.6 |
HIP 64802 |
20.87 |
| 2026-06-10 00:00 |
13:15:53.62 |
+02:26:45.7 |
HIP 64802 |
21.49 |
| 2026-06-10 12:00 |
13:15:49.45 |
+02:26:35.6 |
HIP 64802 |
22.11 |
| 2026-06-11 00:00 |
13:15:45.46 |
+02:26:24.2 |
HIP 64802 |
22.71 |
| 2026-06-11 12:00 |
13:15:41.65 |
+02:26:11.5 |
HIP 64802 |
23.29 |
| 2026-06-12 00:00 |
13:15:38.03 |
+02:25:57.6 |
HIP 64802 |
23.85 |
| 2026-06-12 12:00 |
13:15:34.58 |
+02:25:42.3 |
HIP 64802 |
24.38 |
| 2026-06-13 00:00 |
13:15:31.32 |
+02:25:25.8 |
HIP 64802 |
24.88 |
| 2026-06-13 12:00 |
13:15:28.24 |
+02:25:08.1 |
HIP 64802 |
25.35 |
| 2026-06-14 00:00 |
13:15:25.34 |
+02:24:49.0 |
HIP 64802 |
25.79 |
| 2026-06-14 12:00 |
13:15:22.62 |
+02:24:28.7 |
HIP 64802 |
26.20 |
| 2026-06-15 00:00 |
13:15:20.09 |
+02:24:07.2 |
HIP 64802 |
26.57 |
| 2026-06-15 12:00 |
13:15:17.74 |
+02:23:44.4 |
HIP 64802 |
26.91 |
| 2026-06-16 00:00 |
13:15:15.57 |
+02:23:20.4 |
HIP 64802 |
27.21 |
| 2026-06-16 12:00 |
13:15:13.58 |
+02:22:55.2 |
HIP 64802 |
27.47 |
| 2026-06-17 00:00 |
13:15:11.77 |
+02:22:28.7 |
HIP 64802 |
27.70 |
| 2026-06-17 12:00 |
13:15:10.15 |
+02:22:01.0 |
HIP 64802 |
27.89 |
| 2026-06-18 00:00 |
13:15:08.71 |
+02:21:32.1 |
HIP 64802 |
28.04 |
| 2026-06-18 12:00 |
13:15:07.45 |
+02:21:02.0 |
HIP 64802 |
28.15 |
| 2026-06-19 00:00 |
13:15:06.38 |
+02:20:30.7 |
HIP 64802 |
28.23 |
| 2026-06-19 12:00 |
13:15:05.48 |
+02:19:58.2 |
HIP 64802 |
28.27 |
| 2026-06-20 00:00 |
13:15:04.76 |
+02:19:24.5 |
HIP 64802 |
28.27 |
| 2026-06-20 12:00 |
13:15:04.23 |
+02:18:49.7 |
HIP 64802 |
28.24 |
| 2026-06-21 00:00 |
13:15:03.88 |
+02:18:13.7 |
HIP 64802 |
28.17 |
| 2026-06-21 12:00 |
13:15:03.70 |
+02:17:36.5 |
HIP 64802 |
28.06 |
| 2026-06-22 00:00 |
13:15:03.71 |
+02:16:58.2 |
HIP 64802 |
27.92 |