메타데이터
| 항목 |
값 |
| Designation |
C/2017 E2 (Tsuchinshan) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2016-05-12T05:30:48.654720Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:33:31Z |
| Obs used |
149 |
| NEO |
- |
| M1 |
14.500 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2017-03-22.0000000 |
| e |
0.89088950 |
| q (au) |
2.353028 |
| a (au) |
21.565554 |
| i (deg) |
79.169792 |
| Ω (om, deg) |
11.562100 |
| ω (w, deg) |
89.463163 |
| M (ma, deg) |
3.087983 |
밝기
산란 + 전체 선형
$$
M_a = (13.350 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.350 |
| n |
2.000 |
| gf |
0.999 |
| gb |
-0.911 |
| k |
1.000 |
| 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 |
10:44:15.04 |
-62:46:27.6 |
HIP 52557 |
3.46 |
| 2026-06-01 12:00 |
10:44:14.54 |
-62:45:13.7 |
HIP 52557 |
3.48 |
| 2026-06-02 00:00 |
10:44:14.14 |
-62:44:00.0 |
HIP 52557 |
3.89 |
| 2026-06-02 12:00 |
10:44:13.84 |
-62:42:46.3 |
HIP 52557 |
4.59 |
| 2026-06-03 00:00 |
10:44:13.64 |
-62:41:32.9 |
HIP 52557 |
5.47 |
| 2026-06-03 12:00 |
10:44:13.53 |
-62:40:19.6 |
HIP 52557 |
6.46 |
| 2026-06-04 00:00 |
10:44:13.53 |
-62:39:06.4 |
HIP 52557 |
7.51 |
| 2026-06-04 12:00 |
10:44:13.62 |
-62:37:53.4 |
HIP 52557 |
8.60 |
| 2026-06-05 00:00 |
10:44:13.81 |
-62:36:40.6 |
HIP 52557 |
9.71 |
| 2026-06-05 12:00 |
10:44:14.09 |
-62:35:27.9 |
HIP 52557 |
10.83 |
| 2026-06-06 00:00 |
10:44:14.48 |
-62:34:15.5 |
HIP 52557 |
11.97 |
| 2026-06-06 12:00 |
10:44:14.96 |
-62:33:03.2 |
HIP 52557 |
13.11 |
| 2026-06-07 00:00 |
10:44:15.54 |
-62:31:51.1 |
HIP 52557 |
14.26 |
| 2026-06-07 12:00 |
10:44:16.21 |
-62:30:39.2 |
HIP 52557 |
15.41 |
| 2026-06-08 00:00 |
10:44:16.98 |
-62:29:27.5 |
HIP 52557 |
16.57 |
| 2026-06-08 12:00 |
10:44:17.84 |
-62:28:16.0 |
HIP 52421 |
17.41 |
| 2026-06-09 00:00 |
10:44:18.80 |
-62:27:04.8 |
HIP 52421 |
16.46 |
| 2026-06-09 12:00 |
10:44:19.85 |
-62:25:53.7 |
HIP 52421 |
15.55 |
| 2026-06-10 00:00 |
10:44:21.00 |
-62:24:42.9 |
HIP 52421 |
14.69 |
| 2026-06-10 12:00 |
10:44:22.24 |
-62:23:32.3 |
HIP 52421 |
13.90 |
| 2026-06-11 00:00 |
10:44:23.58 |
-62:22:22.0 |
HIP 52421 |
13.17 |
| 2026-06-11 12:00 |
10:44:25.01 |
-62:21:11.9 |
HIP 52421 |
12.52 |
| 2026-06-12 00:00 |
10:44:26.53 |
-62:20:02.1 |
HIP 52421 |
11.96 |
| 2026-06-12 12:00 |
10:44:28.14 |
-62:18:52.5 |
HIP 52421 |
11.52 |
| 2026-06-13 00:00 |
10:44:29.85 |
-62:17:43.1 |
HIP 52421 |
11.18 |
| 2026-06-13 12:00 |
10:44:31.65 |
-62:16:34.1 |
HIP 52421 |
10.98 |
| 2026-06-14 00:00 |
10:44:33.54 |
-62:15:25.3 |
HIP 52421 |
10.91 |
| 2026-06-14 12:00 |
10:44:35.52 |
-62:14:16.7 |
HIP 52421 |
10.98 |
| 2026-06-15 00:00 |
10:44:37.59 |
-62:13:08.5 |
HIP 52421 |
11.18 |
| 2026-06-15 12:00 |
10:44:39.76 |
-62:12:00.6 |
HIP 52421 |
11.50 |
| 2026-06-16 00:00 |
10:44:42.01 |
-62:10:52.9 |
HIP 52421 |
11.94 |
| 2026-06-16 12:00 |
10:44:44.35 |
-62:09:45.6 |
HIP 52421 |
12.48 |
| 2026-06-17 00:00 |
10:44:46.78 |
-62:08:38.5 |
HIP 52421 |
13.10 |
| 2026-06-17 12:00 |
10:44:49.30 |
-62:07:31.8 |
HIP 52421 |
13.81 |
| 2026-06-18 00:00 |
10:44:51.91 |
-62:06:25.4 |
HIP 52670 |
13.72 |
| 2026-06-18 12:00 |
10:44:54.60 |
-62:05:19.3 |
HIP 52670 |
12.72 |
| 2026-06-19 00:00 |
10:44:57.38 |
-62:04:13.5 |
HIP 52670 |
11.74 |
| 2026-06-19 12:00 |
10:45:00.25 |
-62:03:08.1 |
HIP 52670 |
10.78 |
| 2026-06-20 00:00 |
10:45:03.20 |
-62:02:03.0 |
HIP 52670 |
9.86 |
| 2026-06-20 12:00 |
10:45:06.24 |
-62:00:58.3 |
HIP 52670 |
8.99 |
| 2026-06-21 00:00 |
10:45:09.36 |
-61:59:53.8 |
HIP 52670 |
8.18 |
| 2026-06-21 12:00 |
10:45:12.57 |
-61:58:49.8 |
HIP 52670 |
7.44 |
| 2026-06-22 00:00 |
10:45:15.86 |
-61:57:46.1 |
HIP 52670 |
6.80 |