메타데이터
| 항목 |
값 |
| Designation |
C/1998 M6 (Montani) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1998-10-06T09:36:58.354560Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:57Z |
| Obs used |
94 |
| NEO |
- |
| M1 |
7.500 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1998-08-01.0000000 |
| e |
0.99887950 |
| q (au) |
5.978630 |
| a (au) |
5335.660755 |
| i (deg) |
91.539988 |
| Ω (om, deg) |
306.603673 |
| ω (w, deg) |
9.130637 |
| M (ma, deg) |
359.999832 |
밝기
산란 + 전체 선형
$$
M_a = (5.320 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
5.320 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.865 |
| k |
0.989 |
| δ90 |
1.417 |
| 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) |
| 2026-05-12 00:00 |
09:22:15.96 |
+50:02:39.8 |
HIP 45904 |
7.55 |
| 2026-05-12 12:00 |
09:22:16.01 |
+50:02:15.1 |
HIP 45904 |
7.74 |
| 2026-05-13 00:00 |
09:22:16.09 |
+50:01:50.3 |
HIP 45904 |
7.96 |
| 2026-05-13 12:00 |
09:22:16.21 |
+50:01:25.5 |
HIP 45904 |
8.20 |
| 2026-05-14 00:00 |
09:22:16.36 |
+50:01:00.5 |
HIP 45904 |
8.45 |
| 2026-05-14 12:00 |
09:22:16.54 |
+50:00:35.6 |
HIP 45904 |
8.72 |
| 2026-05-15 00:00 |
09:22:16.75 |
+50:00:10.5 |
HIP 45904 |
9.01 |
| 2026-05-15 12:00 |
09:22:16.99 |
+49:59:45.5 |
HIP 45904 |
9.31 |
| 2026-05-16 00:00 |
09:22:17.26 |
+49:59:20.3 |
HIP 45904 |
9.63 |
| 2026-05-16 12:00 |
09:22:17.57 |
+49:58:55.1 |
HIP 45904 |
9.96 |
| 2026-05-17 00:00 |
09:22:17.91 |
+49:58:29.9 |
HIP 45904 |
10.30 |
| 2026-05-17 12:00 |
09:22:18.28 |
+49:58:04.6 |
HIP 45904 |
10.65 |
| 2026-05-18 00:00 |
09:22:18.68 |
+49:57:39.3 |
HIP 45904 |
11.00 |
| 2026-05-18 12:00 |
09:22:19.11 |
+49:57:13.9 |
HIP 45904 |
11.37 |
| 2026-05-19 00:00 |
09:22:19.57 |
+49:56:48.5 |
HIP 45904 |
11.74 |
| 2026-05-19 12:00 |
09:22:20.07 |
+49:56:23.0 |
HIP 45904 |
12.13 |
| 2026-05-20 00:00 |
09:22:20.59 |
+49:55:57.5 |
HIP 45904 |
12.52 |
| 2026-05-20 12:00 |
09:22:21.15 |
+49:55:32.0 |
HIP 45904 |
12.91 |
| 2026-05-21 00:00 |
09:22:21.74 |
+49:55:06.4 |
HIP 45904 |
13.31 |
| 2026-05-21 12:00 |
09:22:22.36 |
+49:54:40.8 |
HIP 45904 |
13.72 |
| 2026-05-22 00:00 |
09:22:23.01 |
+49:54:15.2 |
HIP 45904 |
14.13 |
| 2026-05-22 12:00 |
09:22:23.69 |
+49:53:49.5 |
HIP 45904 |
14.55 |
| 2026-05-23 00:00 |
09:22:24.40 |
+49:53:23.8 |
HIP 45904 |
14.97 |
| 2026-05-23 12:00 |
09:22:25.14 |
+49:52:58.1 |
HIP 45904 |
15.39 |
| 2026-05-24 00:00 |
09:22:25.91 |
+49:52:32.4 |
HIP 45904 |
15.82 |
| 2026-05-24 12:00 |
09:22:26.71 |
+49:52:06.6 |
HIP 45904 |
16.25 |
| 2026-05-25 00:00 |
09:22:27.54 |
+49:51:40.8 |
HIP 45904 |
16.69 |
| 2026-05-25 12:00 |
09:22:28.40 |
+49:51:15.0 |
HIP 45904 |
17.13 |
| 2026-05-26 00:00 |
09:22:29.29 |
+49:50:49.1 |
HIP 45904 |
17.57 |
| 2026-05-26 12:00 |
09:22:30.21 |
+49:50:23.3 |
HIP 45974 |
17.70 |
| 2026-05-27 00:00 |
09:22:31.16 |
+49:49:57.4 |
HIP 45974 |
17.27 |
| 2026-05-27 12:00 |
09:22:32.13 |
+49:49:31.5 |
HIP 45974 |
16.84 |
| 2026-05-28 00:00 |
09:22:33.14 |
+49:49:05.6 |
HIP 45974 |
16.40 |
| 2026-05-28 12:00 |
09:22:34.18 |
+49:48:39.7 |
HIP 45974 |
15.98 |
| 2026-05-29 00:00 |
09:22:35.24 |
+49:48:13.8 |
HIP 45974 |
15.55 |
| 2026-05-29 12:00 |
09:22:36.34 |
+49:47:47.9 |
HIP 45974 |
15.12 |
| 2026-05-30 00:00 |
09:22:37.46 |
+49:47:22.0 |
HIP 45974 |
14.70 |
| 2026-05-30 12:00 |
09:22:38.61 |
+49:46:56.0 |
HIP 45974 |
14.28 |
| 2026-05-31 00:00 |
09:22:39.80 |
+49:46:30.1 |
HIP 45974 |
13.87 |
| 2026-05-31 12:00 |
09:22:41.00 |
+49:46:04.1 |
HIP 45974 |
13.45 |
| 2026-06-01 00:00 |
09:22:42.24 |
+49:45:38.2 |
HIP 45974 |
13.05 |
| 2026-06-01 12:00 |
09:22:43.51 |
+49:45:12.2 |
HIP 45974 |
12.65 |
| 2026-06-02 00:00 |
09:22:44.80 |
+49:44:46.3 |
HIP 45974 |
12.25 |