메타데이터
| 항목 |
값 |
| Designation |
458P/Jahn |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2022-10-30T01:02:09.162240Z |
| Orbit solution date (soln_date, UTC) |
2023-04-26T18:45:19Z |
| Obs used |
65 |
| NEO |
- |
| M1 |
9.200 |
| K1 |
22.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2016-02-10T13:20:07.814400Z |
| Discovery magnitude (MPC) |
23.98 G |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2020-03-22.0000000 |
| e |
0.31500840 |
| q (au) |
2.645016 |
| a (au) |
3.861384 |
| i (deg) |
13.606395 |
| Ω (om, deg) |
1.625135 |
| ω (w, deg) |
104.364729 |
| M (ma, deg) |
236.335161 |
밝기
산란 + 전체 선형
$$
M_a = (14.803 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.803 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.696 |
| k |
0.800 |
| δ90 |
10.000 |
| 파라미터 |
기호 |
범위 |
설명 |
| 태양·지구거리 1 AU에서의 절대등급 |
H0 |
-5 to 20 |
혜성의 고유 밝기 |
| 광도 기울기 파라미터 |
n |
2 to 6 |
태양거리 변화에 따른 밝기 변화율 |
| 전방 산란 비대칭 계수 |
gf |
0.8 to 1 |
전방 산란의 강도 |
| 후방 산란 비대칭 계수 |
gb |
-1 to -0.5 |
후방 산란의 강도 |
| 분할 계수 |
k |
0.8 to 1 |
전·후방 산란 기여도 비율 |
| 먼지/가스 밝기 비 |
δ90 |
1 to 10 |
코마에서 먼지 산란 대비 가스 방출의 상대 기여 |
참고: EPSC-DPS2025-160
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
19:32:22.12 |
-37:58:25.8 |
HIP 96119 |
11.16 |
| 2026-06-01 12:00 |
19:32:08.84 |
-37:59:51.6 |
HIP 96119 |
10.87 |
| 2026-06-02 00:00 |
19:31:55.32 |
-38:01:17.1 |
HIP 96119 |
11.42 |
| 2026-06-02 12:00 |
19:31:41.59 |
-38:02:42.3 |
HIP 95956 |
11.33 |
| 2026-06-03 00:00 |
19:31:27.63 |
-38:04:07.2 |
HIP 95956 |
8.25 |
| 2026-06-03 12:00 |
19:31:13.45 |
-38:05:31.6 |
HIP 95956 |
5.13 |
| 2026-06-04 00:00 |
19:30:59.06 |
-38:06:55.8 |
HIP 95956 |
2.02 |
| 2026-06-04 12:00 |
19:30:44.44 |
-38:08:19.5 |
HIP 95956 |
1.35 |
| 2026-06-05 00:00 |
19:30:29.61 |
-38:09:42.8 |
HIP 95956 |
4.50 |
| 2026-06-05 12:00 |
19:30:14.57 |
-38:11:05.7 |
HIP 95956 |
7.75 |
| 2026-06-06 00:00 |
19:29:59.31 |
-38:12:28.2 |
HIP 95956 |
11.04 |
| 2026-06-06 12:00 |
19:29:43.85 |
-38:13:50.2 |
HIP 95956 |
14.37 |
| 2026-06-07 00:00 |
19:29:28.17 |
-38:15:11.7 |
HIP 95736 |
14.73 |
| 2026-06-07 12:00 |
19:29:12.29 |
-38:16:32.7 |
HIP 95736 |
11.35 |
| 2026-06-08 00:00 |
19:28:56.20 |
-38:17:53.3 |
HIP 95736 |
7.96 |
| 2026-06-08 12:00 |
19:28:39.91 |
-38:19:13.2 |
HIP 95736 |
4.60 |
| 2026-06-09 00:00 |
19:28:23.41 |
-38:20:32.7 |
HIP 95736 |
1.72 |
| 2026-06-09 12:00 |
19:28:06.72 |
-38:21:51.6 |
HIP 95736 |
3.07 |
| 2026-06-10 00:00 |
19:27:49.83 |
-38:23:09.8 |
HIP 95736 |
6.42 |
| 2026-06-10 12:00 |
19:27:32.74 |
-38:24:27.5 |
HIP 95736 |
9.95 |
| 2026-06-11 00:00 |
19:27:15.47 |
-38:25:44.6 |
HIP 95736 |
13.54 |
| 2026-06-11 12:00 |
19:26:58.00 |
-38:27:01.0 |
HIP 95573 |
14.53 |
| 2026-06-12 00:00 |
19:26:40.34 |
-38:28:16.8 |
HIP 95573 |
14.56 |
| 2026-06-12 12:00 |
19:26:22.50 |
-38:29:31.9 |
HIP 95573 |
15.47 |
| 2026-06-13 00:00 |
19:26:04.48 |
-38:30:46.3 |
HIP 95573 |
17.16 |
| 2026-06-13 12:00 |
19:25:46.28 |
-38:32:00.0 |
HIP 95573 |
19.43 |
| 2026-06-14 00:00 |
19:25:27.90 |
-38:33:13.0 |
HIP 95573 |
22.12 |
| 2026-06-14 12:00 |
19:25:09.34 |
-38:34:25.2 |
HIP 95327 |
24.96 |
| 2026-06-15 00:00 |
19:24:50.62 |
-38:35:36.7 |
HIP 95327 |
23.46 |
| 2026-06-15 12:00 |
19:24:31.72 |
-38:36:47.4 |
HIP 95332 |
22.48 |
| 2026-06-16 00:00 |
19:24:12.66 |
-38:37:57.3 |
HIP 95332 |
20.05 |
| 2026-06-16 12:00 |
19:23:53.44 |
-38:39:06.3 |
HIP 95332 |
18.13 |
| 2026-06-17 00:00 |
19:23:34.06 |
-38:40:14.6 |
HIP 95332 |
16.94 |
| 2026-06-17 12:00 |
19:23:14.52 |
-38:41:21.9 |
HIP 95332 |
16.65 |
| 2026-06-18 00:00 |
19:22:54.83 |
-38:42:28.5 |
HIP 95332 |
17.32 |
| 2026-06-18 12:00 |
19:22:34.99 |
-38:43:34.1 |
HIP 95332 |
18.85 |
| 2026-06-19 00:00 |
19:22:15.01 |
-38:44:38.8 |
HIP 95096 |
17.10 |
| 2026-06-19 12:00 |
19:21:54.88 |
-38:45:42.6 |
HIP 95096 |
13.21 |
| 2026-06-20 00:00 |
19:21:34.61 |
-38:46:45.5 |
HIP 95096 |
9.43 |
| 2026-06-20 12:00 |
19:21:14.21 |
-38:47:47.5 |
HIP 95096 |
6.05 |
| 2026-06-21 00:00 |
19:20:53.67 |
-38:48:48.4 |
HIP 95096 |
4.22 |
| 2026-06-21 12:00 |
19:20:33.01 |
-38:49:48.4 |
HIP 95096 |
5.75 |
| 2026-06-22 00:00 |
19:20:12.22 |
-38:50:47.5 |
HIP 95096 |
9.10 |