메타데이터
| 항목 |
값 |
| Designation |
C/1998 M2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1998-08-13T04:08:09.286080Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:53Z |
| Obs used |
386 |
| NEO |
- |
| M1 |
8.300 |
| K1 |
11.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1998-08-18.0000000 |
| e |
0.99775644 |
| q (au) |
2.725333 |
| a (au) |
1214.736178 |
| i (deg) |
60.182314 |
| Ω (om, deg) |
260.880195 |
| ω (w, deg) |
37.242994 |
| M (ma, deg) |
0.000112 |
밝기
산란 + 전체 선형
$$
M_a = (6.569 + 5.036\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.569 |
| n |
5.036 |
| 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 |
05:38:43.79 |
+14:23:55.6 |
HIP 26590 |
11.09 |
| 2026-03-26 12:00 |
05:38:44.27 |
+14:24:00.0 |
HIP 26590 |
10.96 |
| 2026-03-27 00:00 |
05:38:44.77 |
+14:24:04.3 |
HIP 26590 |
10.84 |
| 2026-03-27 12:00 |
05:38:45.29 |
+14:24:08.7 |
HIP 26590 |
10.71 |
| 2026-03-28 00:00 |
05:38:45.83 |
+14:24:13.0 |
HIP 26590 |
10.59 |
| 2026-03-28 12:00 |
05:38:46.39 |
+14:24:17.4 |
HIP 26590 |
10.46 |
| 2026-03-29 00:00 |
05:38:46.97 |
+14:24:21.7 |
HIP 26590 |
10.32 |
| 2026-03-29 12:00 |
05:38:47.58 |
+14:24:26.1 |
HIP 26590 |
10.19 |
| 2026-03-30 00:00 |
05:38:48.20 |
+14:24:30.4 |
HIP 26590 |
10.05 |
| 2026-03-30 12:00 |
05:38:48.85 |
+14:24:34.7 |
HIP 26590 |
9.92 |
| 2026-03-31 00:00 |
05:38:49.52 |
+14:24:39.1 |
HIP 26590 |
9.78 |
| 2026-03-31 12:00 |
05:38:50.20 |
+14:24:43.4 |
HIP 26590 |
9.64 |
| 2026-04-01 00:00 |
05:38:50.91 |
+14:24:47.7 |
HIP 26590 |
9.50 |
| 2026-04-01 12:00 |
05:38:51.64 |
+14:24:52.0 |
HIP 26590 |
9.37 |
| 2026-04-02 00:00 |
05:38:52.39 |
+14:24:56.4 |
HIP 26590 |
9.23 |
| 2026-04-02 12:00 |
05:38:53.15 |
+14:25:00.7 |
HIP 26590 |
9.09 |
| 2026-04-03 00:00 |
05:38:53.94 |
+14:25:05.0 |
HIP 26590 |
8.95 |
| 2026-04-03 12:00 |
05:38:54.75 |
+14:25:09.3 |
HIP 26590 |
8.81 |
| 2026-04-04 00:00 |
05:38:55.58 |
+14:25:13.6 |
HIP 26590 |
8.68 |
| 2026-04-04 12:00 |
05:38:56.43 |
+14:25:17.9 |
HIP 26590 |
8.54 |
| 2026-04-05 00:00 |
05:38:57.30 |
+14:25:22.2 |
HIP 26590 |
8.41 |
| 2026-04-05 12:00 |
05:38:58.19 |
+14:25:26.4 |
HIP 26590 |
8.28 |
| 2026-04-06 00:00 |
05:38:59.10 |
+14:25:30.7 |
HIP 26590 |
8.15 |
| 2026-04-06 12:00 |
05:39:00.02 |
+14:25:35.0 |
HIP 26590 |
8.03 |
| 2026-04-07 00:00 |
05:39:00.97 |
+14:25:39.2 |
HIP 26590 |
7.91 |
| 2026-04-07 12:00 |
05:39:01.94 |
+14:25:43.5 |
HIP 26590 |
7.80 |
| 2026-04-08 00:00 |
05:39:02.93 |
+14:25:47.7 |
HIP 26590 |
7.69 |
| 2026-04-08 12:00 |
05:39:03.93 |
+14:25:51.9 |
HIP 26590 |
7.59 |
| 2026-04-09 00:00 |
05:39:04.96 |
+14:25:56.1 |
HIP 26590 |
7.50 |
| 2026-04-09 12:00 |
05:39:06.01 |
+14:26:00.3 |
HIP 26590 |
7.41 |
| 2026-04-10 00:00 |
05:39:07.07 |
+14:26:04.5 |
HIP 26590 |
7.33 |
| 2026-04-10 12:00 |
05:39:08.15 |
+14:26:08.7 |
HIP 26590 |
7.26 |
| 2026-04-11 00:00 |
05:39:09.26 |
+14:26:12.9 |
HIP 26590 |
7.20 |
| 2026-04-11 12:00 |
05:39:10.38 |
+14:26:17.0 |
HIP 26590 |
7.16 |
| 2026-04-12 00:00 |
05:39:11.52 |
+14:26:21.2 |
HIP 26590 |
7.12 |
| 2026-04-12 12:00 |
05:39:12.68 |
+14:26:25.3 |
HIP 26590 |
7.09 |
| 2026-04-13 00:00 |
05:39:13.86 |
+14:26:29.4 |
HIP 26590 |
7.08 |
| 2026-04-13 12:00 |
05:39:15.05 |
+14:26:33.5 |
HIP 26590 |
7.08 |
| 2026-04-14 00:00 |
05:39:16.27 |
+14:26:37.6 |
HIP 26590 |
7.10 |
| 2026-04-14 12:00 |
05:39:17.50 |
+14:26:41.7 |
HIP 26590 |
7.13 |
| 2026-04-15 00:00 |
05:39:18.76 |
+14:26:45.7 |
HIP 26590 |
7.18 |
| 2026-04-15 12:00 |
05:39:20.03 |
+14:26:49.8 |
HIP 26590 |
7.24 |
| 2026-04-16 00:00 |
05:39:21.31 |
+14:26:53.8 |
HIP 26590 |
7.31 |