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) |
| 2026-03-26 00:00 |
20:36:53.31 |
+13:47:53.5 |
HIP 101733 |
31.12 |
| 2026-03-26 12:00 |
20:36:54.15 |
+13:48:07.2 |
HIP 101733 |
31.31 |
| 2026-03-27 00:00 |
20:36:54.97 |
+13:48:20.9 |
HIP 101733 |
31.51 |
| 2026-03-27 12:00 |
20:36:55.79 |
+13:48:34.7 |
HIP 101733 |
31.71 |
| 2026-03-28 00:00 |
20:36:56.59 |
+13:48:48.4 |
HIP 101733 |
31.91 |
| 2026-03-28 12:00 |
20:36:57.38 |
+13:49:02.2 |
HIP 101733 |
32.11 |
| 2026-03-29 00:00 |
20:36:58.15 |
+13:49:16.0 |
HIP 101733 |
32.31 |
| 2026-03-29 12:00 |
20:36:58.92 |
+13:49:29.8 |
HIP 101733 |
32.52 |
| 2026-03-30 00:00 |
20:36:59.67 |
+13:49:43.6 |
HIP 101733 |
32.73 |
| 2026-03-30 12:00 |
20:37:00.42 |
+13:49:57.4 |
HIP 101733 |
32.94 |
| 2026-03-31 00:00 |
20:37:01.14 |
+13:50:11.3 |
HIP 101733 |
33.15 |
| 2026-03-31 12:00 |
20:37:01.86 |
+13:50:25.2 |
HIP 101733 |
33.37 |
| 2026-04-01 00:00 |
20:37:02.57 |
+13:50:39.0 |
HIP 101733 |
33.58 |
| 2026-04-01 12:00 |
20:37:03.26 |
+13:50:52.9 |
HIP 101733 |
33.80 |
| 2026-04-02 00:00 |
20:37:03.94 |
+13:51:06.8 |
HIP 101733 |
34.02 |
| 2026-04-02 12:00 |
20:37:04.61 |
+13:51:20.7 |
HIP 101733 |
34.24 |
| 2026-04-03 00:00 |
20:37:05.27 |
+13:51:34.6 |
HIP 101733 |
34.46 |
| 2026-04-03 12:00 |
20:37:05.91 |
+13:51:48.5 |
HIP 101733 |
34.68 |
| 2026-04-04 00:00 |
20:37:06.54 |
+13:52:02.5 |
HIP 101733 |
34.90 |
| 2026-04-04 12:00 |
20:37:07.16 |
+13:52:16.4 |
HIP 101733 |
35.13 |
| 2026-04-05 00:00 |
20:37:07.77 |
+13:52:30.3 |
HIP 101733 |
35.35 |
| 2026-04-05 12:00 |
20:37:08.36 |
+13:52:44.3 |
HIP 101733 |
35.58 |
| 2026-04-06 00:00 |
20:37:08.94 |
+13:52:58.2 |
HIP 101733 |
35.81 |
| 2026-04-06 12:00 |
20:37:09.51 |
+13:53:12.1 |
HIP 101733 |
36.03 |
| 2026-04-07 00:00 |
20:37:10.07 |
+13:53:26.1 |
HIP 101733 |
36.26 |
| 2026-04-07 12:00 |
20:37:10.61 |
+13:53:40.0 |
HIP 101733 |
36.49 |
| 2026-04-08 00:00 |
20:37:11.14 |
+13:53:53.9 |
HIP 101733 |
36.72 |
| 2026-04-08 12:00 |
20:37:11.66 |
+13:54:07.9 |
HIP 101733 |
36.95 |
| 2026-04-09 00:00 |
20:37:12.16 |
+13:54:21.8 |
HIP 101733 |
37.18 |
| 2026-04-09 12:00 |
20:37:12.65 |
+13:54:35.7 |
HIP 101733 |
37.41 |
| 2026-04-10 00:00 |
20:37:13.13 |
+13:54:49.6 |
HIP 101733 |
37.64 |
| 2026-04-10 12:00 |
20:37:13.60 |
+13:55:03.6 |
HIP 101733 |
37.87 |
| 2026-04-11 00:00 |
20:37:14.05 |
+13:55:17.5 |
HIP 101733 |
38.10 |
| 2026-04-11 12:00 |
20:37:14.49 |
+13:55:31.4 |
HIP 101733 |
38.34 |
| 2026-04-12 00:00 |
20:37:14.92 |
+13:55:45.2 |
HIP 101733 |
38.57 |
| 2026-04-12 12:00 |
20:37:15.33 |
+13:55:59.1 |
HIP 101733 |
38.80 |
| 2026-04-13 00:00 |
20:37:15.73 |
+13:56:13.0 |
HIP 101733 |
39.03 |
| 2026-04-13 12:00 |
20:37:16.12 |
+13:56:26.8 |
HIP 101733 |
39.26 |
| 2026-04-14 00:00 |
20:37:16.49 |
+13:56:40.7 |
HIP 101769 |
39.24 |
| 2026-04-14 12:00 |
20:37:16.85 |
+13:56:54.5 |
HIP 101769 |
39.00 |
| 2026-04-15 00:00 |
20:37:17.20 |
+13:57:08.3 |
HIP 101769 |
38.76 |
| 2026-04-15 12:00 |
20:37:17.53 |
+13:57:22.1 |
HIP 101769 |
38.52 |
| 2026-04-16 00:00 |
20:37:17.85 |
+13:57:35.8 |
HIP 101769 |
38.29 |