메타데이터
| 항목 |
값 |
| Designation |
60P/Tsuchinshan 2 |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2018-12-11T05:33:44.340480Z |
| Orbit solution date (soln_date, UTC) |
2025-02-28T14:18:31Z |
| Obs used |
1247 |
| NEO |
- |
| M1 |
9.600 |
| K1 |
23.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2018-10-02.0000000 |
| e |
0.53777177 |
| q (au) |
1.622648 |
| a (au) |
3.510492 |
| i (deg) |
3.606471 |
| Ω (om, deg) |
267.581419 |
| ω (w, deg) |
216.554593 |
| M (ma, deg) |
349.475881 |
밝기
산란 + 전체 선형
$$
M_a = (19.813 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
19.813 |
| n |
2.000 |
| gf |
0.997 |
| gb |
-1.000 |
| 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) |
| 2026-05-12 00:00 |
15:11:47.74 |
-21:10:03.2 |
HIP 74332 |
9.23 |
| 2026-05-12 12:00 |
15:11:19.93 |
-21:07:45.4 |
HIP 74332 |
11.27 |
| 2026-05-13 00:00 |
15:10:52.22 |
-21:05:27.4 |
HIP 74332 |
16.22 |
| 2026-05-13 12:00 |
15:10:24.61 |
-21:03:09.1 |
HIP 74332 |
22.20 |
| 2026-05-14 00:00 |
15:09:57.11 |
-21:00:50.5 |
HIP 74111 |
25.14 |
| 2026-05-14 12:00 |
15:09:29.73 |
-20:58:31.8 |
HIP 74111 |
19.54 |
| 2026-05-15 00:00 |
15:09:02.48 |
-20:56:12.9 |
HIP 74111 |
14.96 |
| 2026-05-15 12:00 |
15:08:35.35 |
-20:53:53.9 |
HIP 74111 |
12.55 |
| 2026-05-16 00:00 |
15:08:08.37 |
-20:51:34.8 |
HIP 74111 |
13.48 |
| 2026-05-16 12:00 |
15:07:41.52 |
-20:49:15.6 |
HIP 74111 |
17.19 |
| 2026-05-17 00:00 |
15:07:14.83 |
-20:46:56.5 |
HIP 74111 |
22.29 |
| 2026-05-17 12:00 |
15:06:48.30 |
-20:44:37.3 |
HIP 73867 |
24.14 |
| 2026-05-18 00:00 |
15:06:21.93 |
-20:42:18.2 |
HIP 73867 |
19.05 |
| 2026-05-18 12:00 |
15:05:55.74 |
-20:39:59.3 |
HIP 73867 |
15.16 |
| 2026-05-19 00:00 |
15:05:29.72 |
-20:37:40.4 |
HIP 73867 |
13.51 |
| 2026-05-19 12:00 |
15:05:03.88 |
-20:35:21.8 |
HIP 73867 |
14.81 |
| 2026-05-20 00:00 |
15:04:38.23 |
-20:33:03.3 |
HIP 73867 |
18.40 |
| 2026-05-20 12:00 |
15:04:12.77 |
-20:30:45.1 |
HIP 73867 |
23.22 |
| 2026-05-21 00:00 |
15:03:47.52 |
-20:28:27.2 |
HIP 73867 |
28.61 |
| 2026-05-21 12:00 |
15:03:22.47 |
-20:26:09.5 |
HIP 73867 |
34.28 |
| 2026-05-22 00:00 |
15:02:57.63 |
-20:23:52.2 |
HIP 73867 |
40.10 |
| 2026-05-22 12:00 |
15:02:33.01 |
-20:21:35.3 |
HIP 73400 |
37.79 |
| 2026-05-23 00:00 |
15:02:08.61 |
-20:19:18.8 |
HIP 73400 |
31.64 |
| 2026-05-23 12:00 |
15:01:44.43 |
-20:17:02.8 |
HIP 73400 |
25.55 |
| 2026-05-24 00:00 |
15:01:20.48 |
-20:14:47.2 |
HIP 73400 |
19.50 |
| 2026-05-24 12:00 |
15:00:56.77 |
-20:12:32.1 |
HIP 73400 |
13.53 |
| 2026-05-25 00:00 |
15:00:33.30 |
-20:10:17.5 |
HIP 73400 |
7.65 |
| 2026-05-25 12:00 |
15:00:10.07 |
-20:08:03.6 |
HIP 73400 |
2.21 |
| 2026-05-26 00:00 |
14:59:47.08 |
-20:05:50.2 |
HIP 73400 |
4.50 |
| 2026-05-26 12:00 |
14:59:24.35 |
-20:03:37.4 |
HIP 73400 |
10.13 |
| 2026-05-27 00:00 |
14:59:01.87 |
-20:01:25.3 |
HIP 73400 |
15.81 |
| 2026-05-27 12:00 |
14:58:39.65 |
-19:59:13.9 |
HIP 73400 |
21.45 |
| 2026-05-28 00:00 |
14:58:17.70 |
-19:57:03.1 |
HIP 73370 |
26.59 |
| 2026-05-28 12:00 |
14:57:56.00 |
-19:54:53.2 |
HIP 73370 |
29.16 |
| 2026-05-29 00:00 |
14:57:34.58 |
-19:52:43.9 |
HIP 73370 |
32.44 |
| 2026-05-29 12:00 |
14:57:13.43 |
-19:50:35.5 |
HIP 72994 |
31.71 |
| 2026-05-30 00:00 |
14:56:52.55 |
-19:48:27.9 |
HIP 72994 |
27.99 |
| 2026-05-30 12:00 |
14:56:31.96 |
-19:46:21.1 |
HIP 72994 |
24.90 |
| 2026-05-31 00:00 |
14:56:11.64 |
-19:44:15.2 |
HIP 72994 |
22.68 |
| 2026-05-31 12:00 |
14:55:51.61 |
-19:42:10.2 |
HIP 72994 |
21.54 |
| 2026-06-01 00:00 |
14:55:31.86 |
-19:40:06.1 |
HIP 72994 |
21.60 |
| 2026-06-01 12:00 |
14:55:12.40 |
-19:38:03.0 |
HIP 72994 |
22.81 |
| 2026-06-02 00:00 |
14:54:53.24 |
-19:36:00.8 |
HIP 72994 |
24.96 |