메타데이터
| 항목 |
값 |
| Designation |
364P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2018-06-24T08:55:28.565760Z |
| Orbit solution date (soln_date, UTC) |
2024-06-21T13:42:24Z |
| Obs used |
1487 |
| NEO |
Yes |
| M1 |
17.500 |
| K1 |
7.250 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2020-02-19.0000000 |
| e |
0.72258546 |
| q (au) |
0.798538 |
| a (au) |
2.878499 |
| i (deg) |
12.150085 |
| Ω (om, deg) |
46.217585 |
| ω (w, deg) |
211.966136 |
| M (ma, deg) |
122.023441 |
밝기
산란 + 전체 선형
$$
M_a = (17.631 + 4.427\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
17.631 |
| n |
4.427 |
| gf |
1.000 |
| gb |
-0.722 |
| k |
0.828 |
| δ90 |
1.000 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2022-12-25 |
2023-05-14 |
+32.5086 |
+0.697 |
| 2023-05-14 |
2023-12-06 |
+0.5617 |
-0.236 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
05:19:45.35 |
+29:52:55.6 |
HIP 25001 |
26.66 |
| 2026-05-12 12:00 |
05:20:11.38 |
+29:53:12.6 |
HIP 25001 |
23.21 |
| 2026-05-13 00:00 |
05:20:37.49 |
+29:53:29.7 |
HIP 25001 |
20.76 |
| 2026-05-13 12:00 |
05:21:03.67 |
+29:53:46.7 |
HIP 25001 |
19.68 |
| 2026-05-14 00:00 |
05:21:29.91 |
+29:54:03.8 |
HIP 25001 |
20.22 |
| 2026-05-14 12:00 |
05:21:56.23 |
+29:54:20.8 |
HIP 25157 |
17.46 |
| 2026-05-15 00:00 |
05:22:22.62 |
+29:54:37.9 |
HIP 25157 |
13.60 |
| 2026-05-15 12:00 |
05:22:49.07 |
+29:54:55.0 |
HIP 25157 |
11.43 |
| 2026-05-16 00:00 |
05:23:15.60 |
+29:55:12.0 |
HIP 25157 |
11.94 |
| 2026-05-16 12:00 |
05:23:42.18 |
+29:55:29.1 |
HIP 25157 |
14.86 |
| 2026-05-17 00:00 |
05:24:08.84 |
+29:55:46.2 |
HIP 25237 |
18.82 |
| 2026-05-17 12:00 |
05:24:35.56 |
+29:56:03.3 |
HIP 25237 |
20.52 |
| 2026-05-18 00:00 |
05:25:02.34 |
+29:56:20.3 |
HIP 25422 |
15.91 |
| 2026-05-18 12:00 |
05:25:29.18 |
+29:56:37.3 |
HIP 25422 |
10.17 |
| 2026-05-19 00:00 |
05:25:56.09 |
+29:56:54.4 |
HIP 25422 |
4.62 |
| 2026-05-19 12:00 |
05:26:23.05 |
+29:57:11.4 |
HIP 25422 |
2.72 |
| 2026-05-20 00:00 |
05:26:50.08 |
+29:57:28.4 |
HIP 25500 |
4.89 |
| 2026-05-20 12:00 |
05:27:17.16 |
+29:57:45.3 |
HIP 25500 |
2.91 |
| 2026-05-21 00:00 |
05:27:44.31 |
+29:58:02.3 |
HIP 25500 |
7.89 |
| 2026-05-21 12:00 |
05:28:11.50 |
+29:58:19.2 |
HIP 25500 |
13.62 |
| 2026-05-22 00:00 |
05:28:38.76 |
+29:58:36.1 |
HIP 25500 |
19.47 |
| 2026-05-22 12:00 |
05:29:06.07 |
+29:58:52.9 |
HIP 25500 |
25.35 |
| 2026-05-23 00:00 |
05:29:33.43 |
+29:59:09.7 |
HIP 25763 |
26.93 |
| 2026-05-23 12:00 |
05:30:00.85 |
+29:59:26.5 |
HIP 25763 |
26.29 |
| 2026-05-24 00:00 |
05:30:28.32 |
+29:59:43.3 |
HIP 25789 |
25.99 |
| 2026-05-24 12:00 |
05:30:55.84 |
+30:00:00.0 |
HIP 25789 |
26.52 |
| 2026-05-25 00:00 |
05:31:23.41 |
+30:00:16.6 |
HIP 25789 |
28.33 |
| 2026-05-25 12:00 |
05:31:51.04 |
+30:00:33.2 |
HIP 25789 |
31.20 |
| 2026-05-26 00:00 |
05:32:18.71 |
+30:00:49.8 |
HIP 25789 |
34.87 |
| 2026-05-26 12:00 |
05:32:46.43 |
+30:01:06.3 |
HIP 26208 |
33.28 |
| 2026-05-27 00:00 |
05:33:14.20 |
+30:01:22.8 |
HIP 26208 |
27.69 |
| 2026-05-27 12:00 |
05:33:42.02 |
+30:01:39.2 |
HIP 26208 |
22.32 |
| 2026-05-28 00:00 |
05:34:09.88 |
+30:01:55.6 |
HIP 26208 |
17.36 |
| 2026-05-28 12:00 |
05:34:37.79 |
+30:02:11.9 |
HIP 26208 |
13.33 |
| 2026-05-29 00:00 |
05:35:05.75 |
+30:02:28.1 |
HIP 26208 |
11.25 |
| 2026-05-29 12:00 |
05:35:33.74 |
+30:02:44.3 |
HIP 26208 |
12.21 |
| 2026-05-30 00:00 |
05:36:01.79 |
+30:03:00.4 |
HIP 26208 |
15.65 |
| 2026-05-30 12:00 |
05:36:29.87 |
+30:03:16.5 |
HIP 26208 |
20.37 |
| 2026-05-31 00:00 |
05:36:58.00 |
+30:03:32.5 |
HIP 26550 |
25.14 |
| 2026-05-31 12:00 |
05:37:26.17 |
+30:03:48.4 |
HIP 26550 |
19.55 |
| 2026-06-01 00:00 |
05:37:54.39 |
+30:04:04.3 |
HIP 26550 |
14.38 |
| 2026-06-01 12:00 |
05:38:22.64 |
+30:04:20.1 |
HIP 26550 |
10.30 |
| 2026-06-02 00:00 |
05:38:50.93 |
+30:04:35.8 |
HIP 26601 |
6.87 |