메타데이터
| 항목 |
값 |
| Designation |
55P/Tempel-Tuttle |
| Type |
P |
| Perihelion (tp_cal, UTC) |
1998-02-28T02:20:44.226240Z |
| Orbit solution date (soln_date, UTC) |
2002-01-03T16:05:39Z |
| Obs used |
392 |
| NEO |
Yes |
| M1 |
10.000 |
| K1 |
25.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1998-08-15.0000000 |
| e |
0.90555272 |
| q (au) |
0.976428 |
| a (au) |
10.338338 |
| i (deg) |
162.486575 |
| Ω (om, deg) |
235.270989 |
| ω (w, deg) |
172.500274 |
| M (ma, deg) |
4.978340 |
밝기
산란 + 전체 선형
$$
M_a = (8.795 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.795 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 1996-05-12 |
1998-01-01 |
-1.9145 |
+1.548 |
| 1998-01-01 |
1998-01-27 |
+5.5017 |
-0.086 |
| 1998-01-27 |
1998-02-28 |
+19.7139 |
-0.354 |
| 1998-02-28 |
1998-07-05 |
+8.1609 |
-1.479 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
14:33:35.79 |
-11:09:44.1 |
HIP 71252 |
10.06 |
| 2026-09-20 12:00 |
14:33:41.28 |
-11:10:12.3 |
HIP 71252 |
8.68 |
| 2026-09-21 00:00 |
14:33:46.82 |
-11:10:40.7 |
HIP 71252 |
7.31 |
| 2026-09-21 12:00 |
14:33:52.41 |
-11:11:09.2 |
HIP 71252 |
5.96 |
| 2026-09-22 00:00 |
14:33:58.04 |
-11:11:37.9 |
HIP 71252 |
4.67 |
| 2026-09-22 12:00 |
14:34:03.73 |
-11:12:06.8 |
HIP 71252 |
3.49 |
| 2026-09-23 00:00 |
14:34:09.46 |
-11:12:35.8 |
HIP 71252 |
2.63 |
| 2026-09-23 12:00 |
14:34:15.24 |
-11:13:05.0 |
HIP 71252 |
2.47 |
| 2026-09-24 00:00 |
14:34:21.07 |
-11:13:34.3 |
HIP 71252 |
3.13 |
| 2026-09-24 12:00 |
14:34:26.94 |
-11:14:03.8 |
HIP 71252 |
4.26 |
| 2026-09-25 00:00 |
14:34:32.86 |
-11:14:33.4 |
HIP 71252 |
5.59 |
| 2026-09-25 12:00 |
14:34:38.82 |
-11:15:03.2 |
HIP 71252 |
7.01 |
| 2026-09-26 00:00 |
14:34:44.82 |
-11:15:33.1 |
HIP 71252 |
8.48 |
| 2026-09-26 12:00 |
14:34:50.88 |
-11:16:03.2 |
HIP 71252 |
9.99 |
| 2026-09-27 00:00 |
14:34:56.97 |
-11:16:33.4 |
HIP 71252 |
11.53 |
| 2026-09-27 12:00 |
14:35:03.11 |
-11:17:03.7 |
HIP 71375 |
12.88 |
| 2026-09-28 00:00 |
14:35:09.29 |
-11:17:34.2 |
HIP 71375 |
11.34 |
| 2026-09-28 12:00 |
14:35:15.52 |
-11:18:04.8 |
HIP 71375 |
9.82 |
| 2026-09-29 00:00 |
14:35:21.78 |
-11:18:35.5 |
HIP 71375 |
8.32 |
| 2026-09-29 12:00 |
14:35:28.09 |
-11:19:06.4 |
HIP 71375 |
6.86 |
| 2026-09-30 00:00 |
14:35:34.44 |
-11:19:37.4 |
HIP 71375 |
5.50 |
| 2026-09-30 12:00 |
14:35:40.83 |
-11:20:08.5 |
HIP 71375 |
4.32 |
| 2026-10-01 00:00 |
14:35:47.26 |
-11:20:39.7 |
HIP 71375 |
3.54 |
| 2026-10-01 12:00 |
14:35:53.73 |
-11:21:11.0 |
HIP 71375 |
3.46 |
| 2026-10-02 00:00 |
14:36:00.25 |
-11:21:42.5 |
HIP 71375 |
4.13 |
| 2026-10-02 12:00 |
14:36:06.80 |
-11:22:14.0 |
HIP 71375 |
5.28 |
| 2026-10-03 00:00 |
14:36:13.39 |
-11:22:45.7 |
HIP 71375 |
6.67 |
| 2026-10-03 12:00 |
14:36:20.02 |
-11:23:17.5 |
HIP 71375 |
8.18 |
| 2026-10-04 00:00 |
14:36:26.68 |
-11:23:49.3 |
HIP 71375 |
9.78 |
| 2026-10-04 12:00 |
14:36:33.39 |
-11:24:21.3 |
HIP 71375 |
11.41 |
| 2026-10-05 00:00 |
14:36:40.13 |
-11:24:53.4 |
HIP 71375 |
13.08 |
| 2026-10-05 12:00 |
14:36:46.91 |
-11:25:25.6 |
HIP 71451 |
13.21 |
| 2026-10-06 00:00 |
14:36:53.73 |
-11:25:57.8 |
HIP 71451 |
12.90 |
| 2026-10-06 12:00 |
14:37:00.58 |
-11:26:30.2 |
HIP 71451 |
12.84 |
| 2026-10-07 00:00 |
14:37:07.47 |
-11:27:02.6 |
HIP 71451 |
13.01 |
| 2026-10-07 12:00 |
14:37:14.39 |
-11:27:35.2 |
HIP 71451 |
13.43 |
| 2026-10-08 00:00 |
14:37:21.34 |
-11:28:07.8 |
HIP 71451 |
14.06 |
| 2026-10-08 12:00 |
14:37:28.34 |
-11:28:40.5 |
HIP 71451 |
14.89 |
| 2026-10-09 00:00 |
14:37:35.36 |
-11:29:13.2 |
HIP 71451 |
15.88 |
| 2026-10-09 12:00 |
14:37:42.42 |
-11:29:46.1 |
HIP 71451 |
17.02 |
| 2026-10-10 00:00 |
14:37:49.51 |
-11:30:19.0 |
HIP 71451 |
18.27 |
| 2026-10-10 12:00 |
14:37:56.63 |
-11:30:51.9 |
HIP 71451 |
19.62 |
| 2026-10-11 00:00 |
14:38:03.78 |
-11:31:24.9 |
HIP 71646 |
18.20 |