메타데이터
| 항목 |
값 |
| Designation |
C/1992 F1 (Tanaka-Machholz) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1992-04-22T16:35:26.859840Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:41Z |
| Obs used |
167 |
| NEO |
- |
| M1 |
5.600 |
| K1 |
19.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1992-05-25.0000000 |
| e |
0.99597703 |
| q (au) |
1.261503 |
| a (au) |
313.574953 |
| i (deg) |
79.292423 |
| Ω (om, deg) |
300.508310 |
| ω (w, deg) |
65.475657 |
| M (ma, deg) |
0.005735 |
밝기
산란 + 전체 선형
$$
M_a = (4.541 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
4.541 |
| n |
6.000 |
| gf |
0.998 |
| gb |
-0.500 |
| 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) |
| 2026-07-29 00:00 |
08:05:30.48 |
-28:19:33.1 |
HIP 39602 |
10.61 |
| 2026-07-29 12:00 |
08:05:32.71 |
-28:19:40.9 |
HIP 39602 |
10.71 |
| 2026-07-30 00:00 |
08:05:34.94 |
-28:19:48.9 |
HIP 39602 |
10.84 |
| 2026-07-30 12:00 |
08:05:37.16 |
-28:19:57.1 |
HIP 39602 |
11.00 |
| 2026-07-31 00:00 |
08:05:39.39 |
-28:20:05.4 |
HIP 39602 |
11.18 |
| 2026-07-31 12:00 |
08:05:41.61 |
-28:20:13.9 |
HIP 39602 |
11.39 |
| 2026-08-01 00:00 |
08:05:43.82 |
-28:20:22.7 |
HIP 39602 |
11.61 |
| 2026-08-01 12:00 |
08:05:46.03 |
-28:20:31.6 |
HIP 39602 |
11.86 |
| 2026-08-02 00:00 |
08:05:48.24 |
-28:20:40.6 |
HIP 39602 |
12.12 |
| 2026-08-02 12:00 |
08:05:50.45 |
-28:20:49.9 |
HIP 39602 |
12.40 |
| 2026-08-03 00:00 |
08:05:52.65 |
-28:20:59.3 |
HIP 39602 |
12.70 |
| 2026-08-03 12:00 |
08:05:54.85 |
-28:21:08.9 |
HIP 39602 |
13.02 |
| 2026-08-04 00:00 |
08:05:57.05 |
-28:21:18.7 |
HIP 39602 |
13.35 |
| 2026-08-04 12:00 |
08:05:59.24 |
-28:21:28.7 |
HIP 39602 |
13.69 |
| 2026-08-05 00:00 |
08:06:01.43 |
-28:21:38.9 |
HIP 39602 |
14.05 |
| 2026-08-05 12:00 |
08:06:03.61 |
-28:21:49.2 |
HIP 39602 |
14.42 |
| 2026-08-06 00:00 |
08:06:05.79 |
-28:21:59.7 |
HIP 39602 |
14.79 |
| 2026-08-06 12:00 |
08:06:07.97 |
-28:22:10.4 |
HIP 39602 |
15.18 |
| 2026-08-07 00:00 |
08:06:10.14 |
-28:22:21.2 |
HIP 39602 |
15.58 |
| 2026-08-07 12:00 |
08:06:12.31 |
-28:22:32.3 |
HIP 39602 |
15.98 |
| 2026-08-08 00:00 |
08:06:14.47 |
-28:22:43.5 |
HIP 39602 |
16.40 |
| 2026-08-08 12:00 |
08:06:16.62 |
-28:22:54.9 |
HIP 39602 |
16.82 |
| 2026-08-09 00:00 |
08:06:18.77 |
-28:23:06.4 |
HIP 39602 |
17.24 |
| 2026-08-09 12:00 |
08:06:20.92 |
-28:23:18.2 |
HIP 39602 |
17.68 |
| 2026-08-10 00:00 |
08:06:23.06 |
-28:23:30.1 |
HIP 39775 |
18.06 |
| 2026-08-10 12:00 |
08:06:25.19 |
-28:23:42.2 |
HIP 39775 |
17.65 |
| 2026-08-11 00:00 |
08:06:27.32 |
-28:23:54.4 |
HIP 39775 |
17.25 |
| 2026-08-11 12:00 |
08:06:29.44 |
-28:24:06.8 |
HIP 39775 |
16.86 |
| 2026-08-12 00:00 |
08:06:31.56 |
-28:24:19.4 |
HIP 39775 |
16.48 |
| 2026-08-12 12:00 |
08:06:33.67 |
-28:24:32.2 |
HIP 39775 |
16.11 |
| 2026-08-13 00:00 |
08:06:35.77 |
-28:24:45.1 |
HIP 39775 |
15.74 |
| 2026-08-13 12:00 |
08:06:37.87 |
-28:24:58.2 |
HIP 39775 |
15.39 |
| 2026-08-14 00:00 |
08:06:39.96 |
-28:25:11.5 |
HIP 39775 |
15.05 |
| 2026-08-14 12:00 |
08:06:42.04 |
-28:25:24.9 |
HIP 39775 |
14.72 |
| 2026-08-15 00:00 |
08:06:44.12 |
-28:25:38.5 |
HIP 39775 |
14.41 |
| 2026-08-15 12:00 |
08:06:46.19 |
-28:25:52.3 |
HIP 39775 |
14.11 |
| 2026-08-16 00:00 |
08:06:48.25 |
-28:26:06.2 |
HIP 39775 |
13.82 |
| 2026-08-16 12:00 |
08:06:50.30 |
-28:26:20.3 |
HIP 39775 |
13.55 |
| 2026-08-17 00:00 |
08:06:52.35 |
-28:26:34.6 |
HIP 39775 |
13.30 |
| 2026-08-17 12:00 |
08:06:54.39 |
-28:26:49.0 |
HIP 39775 |
13.06 |
| 2026-08-18 00:00 |
08:06:56.42 |
-28:27:03.5 |
HIP 39775 |
12.84 |
| 2026-08-18 12:00 |
08:06:58.44 |
-28:27:18.3 |
HIP 39775 |
12.65 |
| 2026-08-19 00:00 |
08:07:00.45 |
-28:27:33.1 |
HIP 39775 |
12.47 |