메타데이터
| 항목 |
값 |
| Designation |
C/1978 T3 (Bradfield) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1978-09-29T02:01:57.146880Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:27Z |
| Obs used |
14 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1978-10-19.0000000 |
| e |
0.99999921 |
| q (au) |
0.431792 |
| a (au) |
547482.576663 |
| i (deg) |
138.267856 |
| Ω (om, deg) |
358.421984 |
| ω (w, deg) |
240.439277 |
| M (ma, deg) |
0.000000 |
밝기
산란 + 전체 선형
$$
M_a = (12.272 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.272 |
| n |
2.000 |
| gf |
1.000 |
| 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) |
| 2026-06-01 00:00 |
20:36:50.00 |
+14:15:19.8 |
HIP 101769 |
22.87 |
| 2026-06-01 12:00 |
20:36:49.10 |
+14:15:28.0 |
HIP 101769 |
22.85 |
| 2026-06-02 00:00 |
20:36:48.20 |
+14:15:36.0 |
HIP 101769 |
22.84 |
| 2026-06-02 12:00 |
20:36:47.28 |
+14:15:44.0 |
HIP 101769 |
22.83 |
| 2026-06-03 00:00 |
20:36:46.35 |
+14:15:51.9 |
HIP 101769 |
22.82 |
| 2026-06-03 12:00 |
20:36:45.42 |
+14:15:59.6 |
HIP 101769 |
22.82 |
| 2026-06-04 00:00 |
20:36:44.47 |
+14:16:07.3 |
HIP 101769 |
22.83 |
| 2026-06-04 12:00 |
20:36:43.50 |
+14:16:14.9 |
HIP 101769 |
22.84 |
| 2026-06-05 00:00 |
20:36:42.53 |
+14:16:22.3 |
HIP 101769 |
22.86 |
| 2026-06-05 12:00 |
20:36:41.55 |
+14:16:29.7 |
HIP 101769 |
22.88 |
| 2026-06-06 00:00 |
20:36:40.56 |
+14:16:37.0 |
HIP 101769 |
22.91 |
| 2026-06-06 12:00 |
20:36:39.55 |
+14:16:44.1 |
HIP 101769 |
22.95 |
| 2026-06-07 00:00 |
20:36:38.54 |
+14:16:51.2 |
HIP 101769 |
22.99 |
| 2026-06-07 12:00 |
20:36:37.51 |
+14:16:58.2 |
HIP 101769 |
23.04 |
| 2026-06-08 00:00 |
20:36:36.48 |
+14:17:05.0 |
HIP 101769 |
23.10 |
| 2026-06-08 12:00 |
20:36:35.43 |
+14:17:11.8 |
HIP 101769 |
23.16 |
| 2026-06-09 00:00 |
20:36:34.37 |
+14:17:18.5 |
HIP 101769 |
23.22 |
| 2026-06-09 12:00 |
20:36:33.30 |
+14:17:25.0 |
HIP 101769 |
23.30 |
| 2026-06-10 00:00 |
20:36:32.23 |
+14:17:31.5 |
HIP 101769 |
23.37 |
| 2026-06-10 12:00 |
20:36:31.14 |
+14:17:37.8 |
HIP 101769 |
23.46 |
| 2026-06-11 00:00 |
20:36:30.04 |
+14:17:44.1 |
HIP 101769 |
23.55 |
| 2026-06-11 12:00 |
20:36:28.93 |
+14:17:50.2 |
HIP 101769 |
23.65 |
| 2026-06-12 00:00 |
20:36:27.81 |
+14:17:56.2 |
HIP 101769 |
23.75 |
| 2026-06-12 12:00 |
20:36:26.68 |
+14:18:02.1 |
HIP 101769 |
23.86 |
| 2026-06-13 00:00 |
20:36:25.55 |
+14:18:08.0 |
HIP 101769 |
23.97 |
| 2026-06-13 12:00 |
20:36:24.40 |
+14:18:13.7 |
HIP 101769 |
24.09 |
| 2026-06-14 00:00 |
20:36:23.24 |
+14:18:19.3 |
HIP 101769 |
24.22 |
| 2026-06-14 12:00 |
20:36:22.07 |
+14:18:24.8 |
HIP 101769 |
24.35 |
| 2026-06-15 00:00 |
20:36:20.89 |
+14:18:30.1 |
HIP 101769 |
24.49 |
| 2026-06-15 12:00 |
20:36:19.71 |
+14:18:35.4 |
HIP 101769 |
24.63 |
| 2026-06-16 00:00 |
20:36:18.51 |
+14:18:40.6 |
HIP 101769 |
24.78 |
| 2026-06-16 12:00 |
20:36:17.31 |
+14:18:45.6 |
HIP 101769 |
24.94 |
| 2026-06-17 00:00 |
20:36:16.09 |
+14:18:50.5 |
HIP 101769 |
25.10 |
| 2026-06-17 12:00 |
20:36:14.87 |
+14:18:55.4 |
HIP 101694 |
25.13 |
| 2026-06-18 00:00 |
20:36:13.64 |
+14:19:00.1 |
HIP 101694 |
25.15 |
| 2026-06-18 12:00 |
20:36:12.40 |
+14:19:04.7 |
HIP 101589 |
25.04 |
| 2026-06-19 00:00 |
20:36:11.15 |
+14:19:09.2 |
HIP 101589 |
24.82 |
| 2026-06-19 12:00 |
20:36:09.89 |
+14:19:13.5 |
HIP 101589 |
24.60 |
| 2026-06-20 00:00 |
20:36:08.62 |
+14:19:17.8 |
HIP 101589 |
24.38 |
| 2026-06-20 12:00 |
20:36:07.34 |
+14:19:21.9 |
HIP 101589 |
24.17 |
| 2026-06-21 00:00 |
20:36:06.06 |
+14:19:26.0 |
HIP 101589 |
23.96 |
| 2026-06-21 12:00 |
20:36:04.77 |
+14:19:29.9 |
HIP 101589 |
23.76 |
| 2026-06-22 00:00 |
20:36:03.47 |
+14:19:33.7 |
HIP 101589 |
23.55 |