메타데이터
| 항목 |
값 |
| Designation |
C/1997 O1 (Tilbrook) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1997-07-13T10:06:45.694080Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:51Z |
| Obs used |
115 |
| NEO |
- |
| M1 |
8.000 |
| K1 |
10.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1997-09-25.0000000 |
| e |
0.98423544 |
| q (au) |
1.371814 |
| a (au) |
87.018855 |
| i (deg) |
115.802396 |
| Ω (om, deg) |
231.245985 |
| ω (w, deg) |
336.189199 |
| M (ma, deg) |
0.089338 |
밝기
산란 + 전체 선형
$$
M_a = (6.718 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.718 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.998 |
| 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) |
| 2026-03-26 00:00 |
03:58:48.50 |
+56:45:16.8 |
HIP 18701 |
15.68 |
| 2026-03-26 12:00 |
03:58:50.83 |
+56:45:00.5 |
HIP 18701 |
15.57 |
| 2026-03-27 00:00 |
03:58:53.18 |
+56:44:44.3 |
HIP 18701 |
15.48 |
| 2026-03-27 12:00 |
03:58:55.57 |
+56:44:28.3 |
HIP 18701 |
15.38 |
| 2026-03-28 00:00 |
03:58:57.99 |
+56:44:12.4 |
HIP 18701 |
15.30 |
| 2026-03-28 12:00 |
03:59:00.44 |
+56:43:56.7 |
HIP 18701 |
15.22 |
| 2026-03-29 00:00 |
03:59:02.91 |
+56:43:41.1 |
HIP 18701 |
15.14 |
| 2026-03-29 12:00 |
03:59:05.42 |
+56:43:25.7 |
HIP 18701 |
15.08 |
| 2026-03-30 00:00 |
03:59:07.95 |
+56:43:10.5 |
HIP 18701 |
15.02 |
| 2026-03-30 12:00 |
03:59:10.51 |
+56:42:55.4 |
HIP 18701 |
14.97 |
| 2026-03-31 00:00 |
03:59:13.10 |
+56:42:40.4 |
HIP 18701 |
14.92 |
| 2026-03-31 12:00 |
03:59:15.72 |
+56:42:25.7 |
HIP 18701 |
14.89 |
| 2026-04-01 00:00 |
03:59:18.37 |
+56:42:11.0 |
HIP 18701 |
14.86 |
| 2026-04-01 12:00 |
03:59:21.04 |
+56:41:56.6 |
HIP 18701 |
14.84 |
| 2026-04-02 00:00 |
03:59:23.74 |
+56:41:42.3 |
HIP 18701 |
14.83 |
| 2026-04-02 12:00 |
03:59:26.47 |
+56:41:28.1 |
HIP 18701 |
14.83 |
| 2026-04-03 00:00 |
03:59:29.23 |
+56:41:14.1 |
HIP 18701 |
14.84 |
| 2026-04-03 12:00 |
03:59:32.01 |
+56:41:00.3 |
HIP 18701 |
14.86 |
| 2026-04-04 00:00 |
03:59:34.82 |
+56:40:46.6 |
HIP 18701 |
14.88 |
| 2026-04-04 12:00 |
03:59:37.66 |
+56:40:33.1 |
HIP 18701 |
14.92 |
| 2026-04-05 00:00 |
03:59:40.52 |
+56:40:19.7 |
HIP 18701 |
14.96 |
| 2026-04-05 12:00 |
03:59:43.41 |
+56:40:06.5 |
HIP 18701 |
15.02 |
| 2026-04-06 00:00 |
03:59:46.32 |
+56:39:53.5 |
HIP 18701 |
15.08 |
| 2026-04-06 12:00 |
03:59:49.26 |
+56:39:40.7 |
HIP 18701 |
15.15 |
| 2026-04-07 00:00 |
03:59:52.22 |
+56:39:28.0 |
HIP 18701 |
15.24 |
| 2026-04-07 12:00 |
03:59:55.21 |
+56:39:15.4 |
HIP 18701 |
15.33 |
| 2026-04-08 00:00 |
03:59:58.23 |
+56:39:03.1 |
HIP 18701 |
15.43 |
| 2026-04-08 12:00 |
04:00:01.27 |
+56:38:50.9 |
HIP 18701 |
15.54 |
| 2026-04-09 00:00 |
04:00:04.33 |
+56:38:38.8 |
HIP 18701 |
15.67 |
| 2026-04-09 12:00 |
04:00:07.42 |
+56:38:27.0 |
HIP 18701 |
15.80 |
| 2026-04-10 00:00 |
04:00:10.53 |
+56:38:15.3 |
HIP 18701 |
15.94 |
| 2026-04-10 12:00 |
04:00:13.67 |
+56:38:03.7 |
HIP 18701 |
16.09 |
| 2026-04-11 00:00 |
04:00:16.83 |
+56:37:52.4 |
HIP 18701 |
16.25 |
| 2026-04-11 12:00 |
04:00:20.01 |
+56:37:41.2 |
HIP 18701 |
16.42 |
| 2026-04-12 00:00 |
04:00:23.22 |
+56:37:30.2 |
HIP 18701 |
16.59 |
| 2026-04-12 12:00 |
04:00:26.45 |
+56:37:19.3 |
HIP 18701 |
16.78 |
| 2026-04-13 00:00 |
04:00:29.70 |
+56:37:08.6 |
HIP 18701 |
16.98 |
| 2026-04-13 12:00 |
04:00:32.97 |
+56:36:58.1 |
HIP 18701 |
17.18 |
| 2026-04-14 00:00 |
04:00:36.27 |
+56:36:47.8 |
HIP 18701 |
17.39 |
| 2026-04-14 12:00 |
04:00:39.59 |
+56:36:37.6 |
HIP 18701 |
17.61 |
| 2026-04-15 00:00 |
04:00:42.93 |
+56:36:27.6 |
HIP 18701 |
17.84 |
| 2026-04-15 12:00 |
04:00:46.29 |
+56:36:17.8 |
HIP 18701 |
18.08 |
| 2026-04-16 00:00 |
04:00:49.67 |
+56:36:08.2 |
HIP 18701 |
18.32 |