| Parameter |
Value |
| Designation |
514P/Lemmon-PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2025-11-23T16:24:19.644480Z |
| Orbit solution date (soln_date, UTC) |
2026-03-14T17:50:16Z |
| Obs used |
172 |
| NEO |
- |
| M1 |
7.500 |
| K1 |
22.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2025-09-19T07:05:17.376000Z |
| Discovery magnitude (MPC) |
19.90 G |
| Discovery observatory (MPC) |
W62 · Comet Hunter Observatory2, New Ringgold |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2022-06-01.0000000 |
| e |
0.35903203 |
| q (au) |
2.918667 |
| a (au) |
4.553530 |
| i (deg) |
6.499970 |
| Ω (om, deg) |
321.641424 |
| ω (w, deg) |
89.136768 |
| M (ma, deg) |
231.008591 |
Magnitude
Scatter + Global Linear
$$
M_a = (15.090 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
15.090 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.796 |
| k |
0.998 |
| 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) |
| 2026-03-26 00:00 |
03:57:15.31 |
+25:38:34.0 |
HIP 18491 |
21.61 |
| 2026-03-26 12:00 |
03:58:00.63 |
+25:39:52.3 |
HIP 18491 |
25.41 |
| 2026-03-27 00:00 |
03:58:46.06 |
+25:41:10.4 |
HIP 18623 |
24.04 |
| 2026-03-27 12:00 |
03:59:31.59 |
+25:42:28.3 |
HIP 18623 |
25.57 |
| 2026-03-28 00:00 |
04:00:17.23 |
+25:43:45.9 |
HIP 18815 |
24.98 |
| 2026-03-28 12:00 |
04:01:02.97 |
+25:45:03.2 |
HIP 18815 |
15.71 |
| 2026-03-29 00:00 |
04:01:48.80 |
+25:46:20.3 |
HIP 18815 |
9.20 |
| 2026-03-29 12:00 |
04:02:34.74 |
+25:47:37.0 |
HIP 18868 |
7.83 |
| 2026-03-30 00:00 |
04:03:20.78 |
+25:48:53.5 |
HIP 18868 |
10.85 |
| 2026-03-30 12:00 |
04:04:06.91 |
+25:50:09.7 |
HIP 18868 |
19.82 |
| 2026-03-31 00:00 |
04:04:53.14 |
+25:51:25.6 |
HIP 19182 |
25.68 |
| 2026-03-31 12:00 |
04:05:39.47 |
+25:52:41.1 |
HIP 19182 |
16.79 |
| 2026-04-01 00:00 |
04:06:25.89 |
+25:53:56.3 |
HIP 19182 |
11.17 |
| 2026-04-01 12:00 |
04:07:12.40 |
+25:55:11.2 |
HIP 19182 |
13.76 |
| 2026-04-02 00:00 |
04:07:59.01 |
+25:56:25.7 |
HIP 19341 |
9.75 |
| 2026-04-02 12:00 |
04:08:45.71 |
+25:57:39.9 |
HIP 19341 |
5.22 |
| 2026-04-03 00:00 |
04:09:32.51 |
+25:58:53.7 |
HIP 19341 |
13.54 |
| 2026-04-03 12:00 |
04:10:19.39 |
+26:00:07.1 |
HIP 19583 |
20.15 |
| 2026-04-04 00:00 |
04:11:06.36 |
+26:01:20.1 |
HIP 19583 |
9.84 |
| 2026-04-04 12:00 |
04:11:53.43 |
+26:02:32.8 |
HIP 19583 |
3.66 |
| 2026-04-05 00:00 |
04:12:40.58 |
+26:03:45.0 |
HIP 19637 |
2.77 |
| 2026-04-05 12:00 |
04:13:27.81 |
+26:04:56.9 |
HIP 19637 |
13.37 |
| 2026-04-06 00:00 |
04:14:15.14 |
+26:06:08.3 |
HIP 19803 |
23.24 |
| 2026-04-06 12:00 |
04:15:02.55 |
+26:07:19.3 |
HIP 19803 |
21.22 |
| 2026-04-07 00:00 |
04:15:50.05 |
+26:08:29.9 |
HIP 19947 |
17.38 |
| 2026-04-07 12:00 |
04:16:37.63 |
+26:09:40.0 |
HIP 19947 |
11.85 |
| 2026-04-08 00:00 |
04:17:25.29 |
+26:10:49.7 |
HIP 19947 |
14.47 |
| 2026-04-08 12:00 |
04:18:13.04 |
+26:11:58.9 |
HIP 20170 |
16.15 |
| 2026-04-09 00:00 |
04:19:00.86 |
+26:13:07.7 |
HIP 20170 |
5.39 |
| 2026-04-09 12:00 |
04:19:48.77 |
+26:14:16.0 |
HIP 20170 |
5.49 |
| 2026-04-10 00:00 |
04:20:36.76 |
+26:15:23.8 |
HIP 20170 |
16.28 |
| 2026-04-10 12:00 |
04:21:24.83 |
+26:16:31.1 |
HIP 20427 |
16.03 |
| 2026-04-11 00:00 |
04:22:12.98 |
+26:17:38.0 |
HIP 20427 |
5.37 |
| 2026-04-11 12:00 |
04:23:01.21 |
+26:18:44.3 |
HIP 20427 |
6.04 |
| 2026-04-12 00:00 |
04:23:49.51 |
+26:19:50.1 |
HIP 20427 |
16.75 |
| 2026-04-12 12:00 |
04:24:37.89 |
+26:20:55.4 |
HIP 20652 |
12.34 |
| 2026-04-13 00:00 |
04:25:26.35 |
+26:22:00.2 |
HIP 20652 |
4.57 |
| 2026-04-13 12:00 |
04:26:14.88 |
+26:23:04.4 |
HIP 20652 |
11.30 |
| 2026-04-14 00:00 |
04:27:03.48 |
+26:24:08.2 |
HIP 20652 |
21.77 |
| 2026-04-14 12:00 |
04:27:52.16 |
+26:25:11.3 |
HIP 20895 |
16.04 |
| 2026-04-15 00:00 |
04:28:40.91 |
+26:26:13.9 |
HIP 20895 |
13.02 |
| 2026-04-15 12:00 |
04:29:29.73 |
+26:27:16.0 |
HIP 20949 |
13.04 |
| 2026-04-16 00:00 |
04:30:18.62 |
+26:28:17.4 |
HIP 20949 |
16.09 |