| 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) |
| 2026-05-12 00:00 |
05:13:54.48 |
+27:05:53.0 |
HIP 24370 |
8.77 |
| 2026-05-12 12:00 |
05:14:45.81 |
+27:06:15.9 |
HIP 24370 |
15.76 |
| 2026-05-13 00:00 |
05:15:37.18 |
+27:06:37.9 |
HIP 24546 |
4.55 |
| 2026-05-13 12:00 |
05:16:28.57 |
+27:06:59.0 |
HIP 24581 |
0.87 |
| 2026-05-14 00:00 |
05:17:19.98 |
+27:07:19.3 |
HIP 24581 |
12.19 |
| 2026-05-14 12:00 |
05:18:11.42 |
+27:07:38.8 |
HIP 24869 |
22.82 |
| 2026-05-15 00:00 |
05:19:02.88 |
+27:07:57.3 |
HIP 24869 |
11.60 |
| 2026-05-15 12:00 |
05:19:54.36 |
+27:08:15.0 |
HIP 24869 |
3.31 |
| 2026-05-16 00:00 |
05:20:45.86 |
+27:08:31.9 |
HIP 24869 |
12.25 |
| 2026-05-16 12:00 |
05:21:37.39 |
+27:08:47.9 |
HIP 25159 |
19.46 |
| 2026-05-17 00:00 |
05:22:28.93 |
+27:09:03.0 |
HIP 25159 |
9.36 |
| 2026-05-17 12:00 |
05:23:20.49 |
+27:09:17.2 |
HIP 25159 |
7.71 |
| 2026-05-18 00:00 |
05:24:12.07 |
+27:09:30.5 |
HIP 25159 |
17.17 |
| 2026-05-18 12:00 |
05:25:03.67 |
+27:09:43.0 |
HIP 25450 |
23.06 |
| 2026-05-19 00:00 |
05:25:55.28 |
+27:09:54.5 |
HIP 25450 |
13.70 |
| 2026-05-19 12:00 |
05:26:46.90 |
+27:10:05.2 |
HIP 25450 |
10.38 |
| 2026-05-20 00:00 |
05:27:38.54 |
+27:10:15.0 |
HIP 25450 |
17.07 |
| 2026-05-20 12:00 |
05:28:30.19 |
+27:10:23.9 |
HIP 25736 |
21.66 |
| 2026-05-21 00:00 |
05:29:21.86 |
+27:10:31.9 |
HIP 25736 |
15.11 |
| 2026-05-21 12:00 |
05:30:13.53 |
+27:10:39.0 |
HIP 25736 |
15.86 |
| 2026-05-22 00:00 |
05:31:05.22 |
+27:10:45.2 |
HIP 25969 |
21.83 |
| 2026-05-22 12:00 |
05:31:56.91 |
+27:10:50.6 |
HIP 25969 |
13.76 |
| 2026-05-23 00:00 |
05:32:48.62 |
+27:10:55.0 |
HIP 25969 |
12.90 |
| 2026-05-23 12:00 |
05:33:40.33 |
+27:10:58.5 |
HIP 26094 |
3.32 |
| 2026-05-24 00:00 |
05:34:32.04 |
+27:11:01.1 |
HIP 26094 |
8.46 |
| 2026-05-24 12:00 |
05:35:23.77 |
+27:11:02.8 |
HIP 26192 |
13.89 |
| 2026-05-25 00:00 |
05:36:15.49 |
+27:11:03.5 |
HIP 26396 |
19.60 |
| 2026-05-25 12:00 |
05:37:07.23 |
+27:11:03.4 |
HIP 26396 |
15.59 |
| 2026-05-26 00:00 |
05:37:58.96 |
+27:11:02.4 |
HIP 26396 |
19.15 |
| 2026-05-26 12:00 |
05:38:50.70 |
+27:11:00.4 |
HIP 26708 |
27.44 |
| 2026-05-27 00:00 |
05:39:42.44 |
+27:10:57.6 |
HIP 26730 |
18.03 |
| 2026-05-27 12:00 |
05:40:34.19 |
+27:10:53.8 |
HIP 26730 |
11.33 |
| 2026-05-28 00:00 |
05:41:25.93 |
+27:10:49.1 |
HIP 26730 |
14.02 |
| 2026-05-28 12:00 |
05:42:17.68 |
+27:10:43.5 |
HIP 27016 |
21.49 |
| 2026-05-29 00:00 |
05:43:09.42 |
+27:10:36.9 |
HIP 27016 |
11.34 |
| 2026-05-29 12:00 |
05:44:01.17 |
+27:10:29.5 |
HIP 27071 |
6.77 |
| 2026-05-30 00:00 |
05:44:52.91 |
+27:10:21.1 |
HIP 27071 |
6.57 |
| 2026-05-30 12:00 |
05:45:44.65 |
+27:10:11.8 |
HIP 27071 |
17.48 |
| 2026-05-31 00:00 |
05:46:36.39 |
+27:10:01.6 |
HIP 27071 |
28.86 |
| 2026-05-31 12:00 |
05:47:28.13 |
+27:09:50.4 |
HIP 27456 |
21.60 |
| 2026-06-01 00:00 |
05:48:19.86 |
+27:09:38.4 |
HIP 27456 |
13.80 |
| 2026-06-01 12:00 |
05:49:11.59 |
+27:09:25.4 |
HIP 27527 |
7.87 |
| 2026-06-02 00:00 |
05:50:03.31 |
+27:09:11.5 |
HIP 27527 |
4.34 |