| Parameter |
Value |
| Designation |
435P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-04-30T15:49:53.086080Z |
| Orbit solution date (soln_date, UTC) |
2021-11-20T19:13:24Z |
| Obs used |
88 |
| NEO |
- |
| M1 |
18.800 |
| K1 |
4.750 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2015-05-18T13:04:20.524800Z |
| Discovery magnitude (MPC) |
22.76 G |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2018-10-13.0000000 |
| e |
0.31859695 |
| q (au) |
2.056387 |
| a (au) |
3.017872 |
| i (deg) |
18.889136 |
| Ω (om, deg) |
98.561523 |
| ω (w, deg) |
244.367853 |
| M (ma, deg) |
168.322066 |
Magnitude
Scatter + Global Linear
$$
M_a = (16.819 + 3.210\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
16.819 |
| n |
3.210 |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
21:07:20.85 |
-21:57:17.5 |
HIP 104367 |
24.03 |
| 2026-06-01 12:00 |
21:07:46.07 |
-22:00:59.2 |
HIP 104317 |
19.26 |
| 2026-06-02 00:00 |
21:08:11.00 |
-22:04:44.2 |
HIP 104317 |
15.77 |
| 2026-06-02 12:00 |
21:08:35.63 |
-22:08:32.5 |
HIP 104317 |
14.77 |
| 2026-06-03 00:00 |
21:08:59.95 |
-22:12:24.2 |
HIP 104317 |
16.69 |
| 2026-06-03 12:00 |
21:09:23.98 |
-22:16:19.2 |
HIP 104487 |
17.34 |
| 2026-06-04 00:00 |
21:09:47.70 |
-22:20:17.6 |
HIP 104487 |
11.61 |
| 2026-06-04 12:00 |
21:10:11.10 |
-22:24:19.5 |
HIP 104534 |
6.25 |
| 2026-06-05 00:00 |
21:10:34.20 |
-22:28:24.8 |
HIP 104534 |
0.86 |
| 2026-06-05 12:00 |
21:10:56.98 |
-22:32:33.5 |
HIP 104534 |
7.23 |
| 2026-06-06 00:00 |
21:11:19.44 |
-22:36:45.7 |
HIP 104534 |
13.89 |
| 2026-06-06 12:00 |
21:11:41.58 |
-22:41:01.5 |
HIP 104534 |
20.53 |
| 2026-06-07 00:00 |
21:12:03.40 |
-22:45:20.7 |
HIP 104764 |
18.86 |
| 2026-06-07 12:00 |
21:12:24.89 |
-22:49:43.5 |
HIP 104764 |
14.47 |
| 2026-06-08 00:00 |
21:12:46.05 |
-22:54:09.9 |
HIP 104764 |
12.37 |
| 2026-06-08 12:00 |
21:13:06.88 |
-22:58:39.9 |
HIP 104764 |
13.63 |
| 2026-06-09 00:00 |
21:13:27.37 |
-23:03:13.4 |
HIP 104764 |
17.52 |
| 2026-06-09 12:00 |
21:13:47.52 |
-23:07:50.5 |
HIP 104864 |
18.39 |
| 2026-06-10 00:00 |
21:14:07.32 |
-23:12:31.3 |
HIP 104864 |
20.68 |
| 2026-06-10 12:00 |
21:14:26.79 |
-23:17:15.8 |
HIP 104864 |
24.62 |
| 2026-06-11 00:00 |
21:14:45.90 |
-23:22:03.8 |
HIP 104864 |
29.53 |
| 2026-06-11 12:00 |
21:15:04.66 |
-23:26:55.6 |
HIP 104864 |
35.02 |
| 2026-06-12 00:00 |
21:15:23.07 |
-23:31:51.0 |
HIP 104864 |
40.83 |
| 2026-06-12 12:00 |
21:15:41.12 |
-23:36:50.1 |
HIP 104827 |
38.87 |
| 2026-06-13 00:00 |
21:15:58.81 |
-23:41:52.9 |
HIP 104827 |
37.18 |
| 2026-06-13 12:00 |
21:16:16.13 |
-23:46:59.4 |
HIP 105217 |
34.00 |
| 2026-06-14 00:00 |
21:16:33.09 |
-23:52:09.7 |
HIP 105217 |
30.31 |
| 2026-06-14 12:00 |
21:16:49.68 |
-23:57:23.6 |
HIP 105217 |
27.75 |
| 2026-06-15 00:00 |
21:17:05.91 |
-24:02:41.2 |
HIP 105217 |
26.67 |
| 2026-06-15 12:00 |
21:17:21.75 |
-24:08:02.6 |
HIP 105217 |
27.23 |
| 2026-06-16 00:00 |
21:17:37.23 |
-24:13:27.7 |
HIP 105217 |
29.35 |
| 2026-06-16 12:00 |
21:17:52.32 |
-24:18:56.4 |
HIP 105217 |
32.73 |
| 2026-06-17 00:00 |
21:18:07.04 |
-24:24:28.9 |
HIP 105217 |
37.02 |
| 2026-06-17 12:00 |
21:18:21.37 |
-24:30:05.1 |
HIP 105195 |
31.54 |
| 2026-06-18 00:00 |
21:18:35.32 |
-24:35:45.0 |
HIP 105195 |
25.76 |
| 2026-06-18 12:00 |
21:18:48.88 |
-24:41:28.5 |
HIP 105195 |
20.32 |
| 2026-06-19 00:00 |
21:19:02.06 |
-24:47:15.8 |
HIP 105195 |
15.62 |
| 2026-06-19 12:00 |
21:19:14.84 |
-24:53:06.7 |
HIP 105195 |
12.55 |
| 2026-06-20 00:00 |
21:19:27.24 |
-24:59:01.2 |
HIP 105195 |
12.38 |
| 2026-06-20 12:00 |
21:19:39.24 |
-25:04:59.4 |
HIP 105195 |
15.25 |
| 2026-06-21 00:00 |
21:19:50.84 |
-25:11:01.2 |
HIP 105195 |
19.89 |
| 2026-06-21 12:00 |
21:20:02.05 |
-25:17:06.6 |
HIP 105195 |
25.37 |
| 2026-06-22 00:00 |
21:20:12.86 |
-25:23:15.6 |
HIP 105195 |
31.25 |