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 |
1.000 |
| 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) |
| 2026-03-26 00:00 |
08:00:50.47 |
-29:11:57.1 |
HIP 39206 |
22.07 |
| 2026-03-26 12:00 |
08:00:49.52 |
-29:11:34.2 |
HIP 39206 |
22.49 |
| 2026-03-27 00:00 |
08:00:48.59 |
-29:11:11.3 |
HIP 39206 |
22.90 |
| 2026-03-27 12:00 |
08:00:47.67 |
-29:10:48.3 |
HIP 39206 |
23.32 |
| 2026-03-28 00:00 |
08:00:46.78 |
-29:10:25.3 |
HIP 39206 |
23.74 |
| 2026-03-28 12:00 |
08:00:45.91 |
-29:10:02.2 |
HIP 39206 |
24.16 |
| 2026-03-29 00:00 |
08:00:45.05 |
-29:09:39.1 |
HIP 39206 |
24.58 |
| 2026-03-29 12:00 |
08:00:44.21 |
-29:09:16.0 |
HIP 39010 |
24.69 |
| 2026-03-30 00:00 |
08:00:43.40 |
-29:08:52.8 |
HIP 39010 |
24.67 |
| 2026-03-30 12:00 |
08:00:42.60 |
-29:08:29.6 |
HIP 39010 |
24.66 |
| 2026-03-31 00:00 |
08:00:41.82 |
-29:08:06.4 |
HIP 38999 |
24.45 |
| 2026-03-31 12:00 |
08:00:41.06 |
-29:07:43.1 |
HIP 38999 |
24.20 |
| 2026-04-01 00:00 |
08:00:40.33 |
-29:07:19.9 |
HIP 38999 |
23.96 |
| 2026-04-01 12:00 |
08:00:39.61 |
-29:06:56.6 |
HIP 38999 |
23.74 |
| 2026-04-02 00:00 |
08:00:38.91 |
-29:06:33.3 |
HIP 38999 |
23.52 |
| 2026-04-02 12:00 |
08:00:38.23 |
-29:06:09.9 |
HIP 38999 |
23.31 |
| 2026-04-03 00:00 |
08:00:37.57 |
-29:05:46.6 |
HIP 38999 |
23.11 |
| 2026-04-03 12:00 |
08:00:36.93 |
-29:05:23.2 |
HIP 38999 |
22.92 |
| 2026-04-04 00:00 |
08:00:36.31 |
-29:04:59.8 |
HIP 38999 |
22.74 |
| 2026-04-04 12:00 |
08:00:35.71 |
-29:04:36.5 |
HIP 38999 |
22.58 |
| 2026-04-05 00:00 |
08:00:35.13 |
-29:04:13.1 |
HIP 38999 |
22.42 |
| 2026-04-05 12:00 |
08:00:34.56 |
-29:03:49.7 |
HIP 38999 |
22.27 |
| 2026-04-06 00:00 |
08:00:34.02 |
-29:03:26.2 |
HIP 39086 |
22.03 |
| 2026-04-06 12:00 |
08:00:33.50 |
-29:03:02.8 |
HIP 39086 |
21.63 |
| 2026-04-07 00:00 |
08:00:33.00 |
-29:02:39.4 |
HIP 39086 |
21.23 |
| 2026-04-07 12:00 |
08:00:32.52 |
-29:02:16.0 |
HIP 39086 |
20.84 |
| 2026-04-08 00:00 |
08:00:32.06 |
-29:01:52.6 |
HIP 39086 |
20.45 |
| 2026-04-08 12:00 |
08:00:31.62 |
-29:01:29.1 |
HIP 39086 |
20.06 |
| 2026-04-09 00:00 |
08:00:31.20 |
-29:01:05.7 |
HIP 39086 |
19.68 |
| 2026-04-09 12:00 |
08:00:30.79 |
-29:00:42.3 |
HIP 39086 |
19.30 |
| 2026-04-10 00:00 |
08:00:30.41 |
-29:00:18.9 |
HIP 39086 |
18.92 |
| 2026-04-10 12:00 |
08:00:30.05 |
-28:59:55.5 |
HIP 39086 |
18.55 |
| 2026-04-11 00:00 |
08:00:29.71 |
-28:59:32.2 |
HIP 39086 |
18.17 |
| 2026-04-11 12:00 |
08:00:29.39 |
-28:59:08.8 |
HIP 39086 |
17.81 |
| 2026-04-12 00:00 |
08:00:29.09 |
-28:58:45.4 |
HIP 39086 |
17.44 |
| 2026-04-12 12:00 |
08:00:28.81 |
-28:58:22.1 |
HIP 39086 |
17.08 |
| 2026-04-13 00:00 |
08:00:28.55 |
-28:57:58.8 |
HIP 39086 |
16.73 |
| 2026-04-13 12:00 |
08:00:28.31 |
-28:57:35.5 |
HIP 39086 |
16.38 |
| 2026-04-14 00:00 |
08:00:28.09 |
-28:57:12.2 |
HIP 39086 |
16.03 |
| 2026-04-14 12:00 |
08:00:27.89 |
-28:56:49.0 |
HIP 39086 |
15.69 |
| 2026-04-15 00:00 |
08:00:27.71 |
-28:56:25.7 |
HIP 39086 |
15.35 |
| 2026-04-15 12:00 |
08:00:27.55 |
-28:56:02.6 |
HIP 39086 |
15.02 |
| 2026-04-16 00:00 |
08:00:27.41 |
-28:55:39.4 |
HIP 39086 |
14.69 |