C/1998 M5 (LINEAR)
메타데이터
| 항목 |
값 |
| Designation |
C/1998 M5 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1999-01-24T13:39:13.763520Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:54Z |
| Obs used |
1238 |
| NEO |
- |
| M1 |
9.500 |
| K1 |
5.250 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1998-11-27.0000000 |
| e |
0.99602466 |
| q (au) |
1.742289 |
| a (au) |
438.273933 |
| i (deg) |
82.228882 |
| Ω (om, deg) |
333.376703 |
| ω (w, deg) |
101.282943 |
| M (ma, deg) |
359.993709 |
밝기
산란 + 전체 선형
$$
M_a = (4.498 + 5.665\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
4.498 |
| n |
5.665 |
| gf |
1.000 |
| gb |
-0.954 |
| k |
0.996 |
| 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) |
| 2026-02-03 00:00 |
08:02:53.98 |
-66:55:53.1 |
HIP 39510 |
19.13 |
| 2026-02-03 12:00 |
08:02:47.84 |
-66:55:44.2 |
HIP 39510 |
19.56 |
| 2026-02-04 00:00 |
08:02:41.72 |
-66:55:34.9 |
HIP 39510 |
20.01 |
| 2026-02-04 12:00 |
08:02:35.61 |
-66:55:25.3 |
HIP 39510 |
20.47 |
| 2026-02-05 00:00 |
08:02:29.52 |
-66:55:15.4 |
HIP 39510 |
20.93 |
| 2026-02-05 12:00 |
08:02:23.45 |
-66:55:05.1 |
HIP 39510 |
21.41 |
| 2026-02-06 00:00 |
08:02:17.40 |
-66:54:54.6 |
HIP 39510 |
21.90 |
| 2026-02-06 12:00 |
08:02:11.36 |
-66:54:43.7 |
HIP 39510 |
22.40 |
| 2026-02-07 00:00 |
08:02:05.34 |
-66:54:32.5 |
HIP 38976 |
22.44 |
| 2026-02-07 12:00 |
08:01:59.35 |
-66:54:21.0 |
HIP 38976 |
21.82 |
| 2026-02-08 00:00 |
08:01:53.37 |
-66:54:09.1 |
HIP 38976 |
21.20 |
| 2026-02-08 12:00 |
08:01:47.41 |
-66:53:57.0 |
HIP 38976 |
20.58 |
| 2026-02-09 00:00 |
08:01:41.48 |
-66:53:44.5 |
HIP 38976 |
19.97 |
| 2026-02-09 12:00 |
08:01:35.56 |
-66:53:31.7 |
HIP 38976 |
19.35 |
| 2026-02-10 00:00 |
08:01:29.67 |
-66:53:18.6 |
HIP 38976 |
18.73 |
| 2026-02-10 12:00 |
08:01:23.80 |
-66:53:05.2 |
HIP 38976 |
18.11 |
| 2026-02-11 00:00 |
08:01:17.95 |
-66:52:51.5 |
HIP 38976 |
17.49 |
| 2026-02-11 12:00 |
08:01:12.13 |
-66:52:37.4 |
HIP 38976 |
16.88 |
| 2026-02-12 00:00 |
08:01:06.33 |
-66:52:23.1 |
HIP 38976 |
16.26 |
| 2026-02-12 12:00 |
08:01:00.55 |
-66:52:08.4 |
HIP 38976 |
15.64 |
| 2026-02-13 00:00 |
08:00:54.80 |
-66:51:53.5 |
HIP 38976 |
15.03 |
| 2026-02-13 12:00 |
08:00:49.08 |
-66:51:38.2 |
HIP 38976 |
14.41 |
| 2026-02-14 00:00 |
08:00:43.38 |
-66:51:22.6 |
HIP 38976 |
13.79 |
| 2026-02-14 12:00 |
08:00:37.70 |
-66:51:06.7 |
HIP 38976 |
13.18 |
| 2026-02-15 00:00 |
08:00:32.06 |
-66:50:50.6 |
HIP 38976 |
12.56 |
| 2026-02-15 12:00 |
08:00:26.44 |
-66:50:34.1 |
HIP 38976 |
11.95 |
| 2026-02-16 00:00 |
08:00:20.85 |
-66:50:17.3 |
HIP 38976 |
11.34 |
| 2026-02-16 12:00 |
08:00:15.29 |
-66:50:00.2 |
HIP 38976 |
10.73 |
| 2026-02-17 00:00 |
08:00:09.75 |
-66:49:42.9 |
HIP 38976 |
10.12 |
| 2026-02-17 12:00 |
08:00:04.25 |
-66:49:25.2 |
HIP 38976 |
9.52 |
| 2026-02-18 00:00 |
07:59:58.77 |
-66:49:07.3 |
HIP 38976 |
8.91 |
| 2026-02-18 12:00 |
07:59:53.33 |
-66:48:49.0 |
HIP 38976 |
8.31 |
| 2026-02-19 00:00 |
07:59:47.92 |
-66:48:30.5 |
HIP 38976 |
7.71 |
| 2026-02-19 12:00 |
07:59:42.53 |
-66:48:11.7 |
HIP 38976 |
7.12 |
| 2026-02-20 00:00 |
07:59:37.18 |
-66:47:52.6 |
HIP 38976 |
6.54 |
| 2026-02-20 12:00 |
07:59:31.86 |
-66:47:33.3 |
HIP 38976 |
5.96 |
| 2026-02-21 00:00 |
07:59:26.58 |
-66:47:13.6 |
HIP 38976 |
5.39 |
| 2026-02-21 12:00 |
07:59:21.32 |
-66:46:53.7 |
HIP 38976 |
4.84 |
| 2026-02-22 00:00 |
07:59:16.10 |
-66:46:33.5 |
HIP 38976 |
4.31 |
| 2026-02-22 12:00 |
07:59:10.92 |
-66:46:13.0 |
HIP 38976 |
3.81 |
| 2026-02-23 00:00 |
07:59:05.77 |
-66:45:52.3 |
HIP 38976 |
3.35 |
| 2026-02-23 12:00 |
07:59:00.65 |
-66:45:31.3 |
HIP 38976 |
2.95 |
| 2026-02-24 00:00 |
07:58:55.57 |
-66:45:10.0 |
HIP 38976 |
2.63 |