메타데이터
| 항목 |
값 |
| Designation |
C/1998 Y1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1998-11-21T13:57:33.661440Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:57Z |
| Obs used |
131 |
| NEO |
- |
| M1 |
14.000 |
| K1 |
10.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1999-01-13.0000000 |
| e |
0.92389938 |
| q (au) |
1.746990 |
| a (au) |
22.956311 |
| i (deg) |
28.108156 |
| Ω (om, deg) |
98.858723 |
| ω (w, deg) |
339.843627 |
| M (ma, deg) |
0.469715 |
밝기
산란 + 전체 선형
$$
M_a = (13.201 + 5.443\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.201 |
| n |
5.443 |
| gf |
0.906 |
| gb |
-0.901 |
| k |
1.000 |
| δ90 |
5.356 |
| 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) |
| 2026-06-01 00:00 |
16:46:57.75 |
-07:58:22.0 |
HIP 82156 |
8.76 |
| 2026-06-01 12:00 |
16:46:54.63 |
-07:58:16.7 |
HIP 82156 |
8.81 |
| 2026-06-02 00:00 |
16:46:51.52 |
-07:58:11.6 |
HIP 82156 |
8.94 |
| 2026-06-02 12:00 |
16:46:48.40 |
-07:58:06.5 |
HIP 82156 |
9.13 |
| 2026-06-03 00:00 |
16:46:45.27 |
-07:58:01.6 |
HIP 82156 |
9.38 |
| 2026-06-03 12:00 |
16:46:42.15 |
-07:57:56.8 |
HIP 82156 |
9.70 |
| 2026-06-04 00:00 |
16:46:39.03 |
-07:57:52.0 |
HIP 82156 |
10.06 |
| 2026-06-04 12:00 |
16:46:35.91 |
-07:57:47.4 |
HIP 82156 |
10.47 |
| 2026-06-05 00:00 |
16:46:32.79 |
-07:57:42.9 |
HIP 82156 |
10.92 |
| 2026-06-05 12:00 |
16:46:29.67 |
-07:57:38.4 |
HIP 82156 |
11.41 |
| 2026-06-06 00:00 |
16:46:26.55 |
-07:57:34.1 |
HIP 82156 |
11.92 |
| 2026-06-06 12:00 |
16:46:23.43 |
-07:57:29.9 |
HIP 82156 |
12.47 |
| 2026-06-07 00:00 |
16:46:20.32 |
-07:57:25.7 |
HIP 82156 |
13.04 |
| 2026-06-07 12:00 |
16:46:17.20 |
-07:57:21.7 |
HIP 82156 |
13.63 |
| 2026-06-08 00:00 |
16:46:14.09 |
-07:57:17.8 |
HIP 82156 |
14.24 |
| 2026-06-08 12:00 |
16:46:10.97 |
-07:57:14.0 |
HIP 82156 |
14.87 |
| 2026-06-09 00:00 |
16:46:07.87 |
-07:57:10.3 |
HIP 82156 |
15.50 |
| 2026-06-09 12:00 |
16:46:04.76 |
-07:57:06.7 |
HIP 82156 |
16.16 |
| 2026-06-10 00:00 |
16:46:01.65 |
-07:57:03.2 |
HIP 82156 |
16.82 |
| 2026-06-10 12:00 |
16:45:58.55 |
-07:56:59.8 |
HIP 82156 |
17.49 |
| 2026-06-11 00:00 |
16:45:55.45 |
-07:56:56.5 |
HIP 82156 |
18.16 |
| 2026-06-11 12:00 |
16:45:52.36 |
-07:56:53.3 |
HIP 82156 |
18.85 |
| 2026-06-12 00:00 |
16:45:49.27 |
-07:56:50.3 |
HIP 82156 |
19.54 |
| 2026-06-12 12:00 |
16:45:46.18 |
-07:56:47.3 |
HIP 82156 |
20.24 |
| 2026-06-13 00:00 |
16:45:43.10 |
-07:56:44.5 |
HIP 82156 |
20.94 |
| 2026-06-13 12:00 |
16:45:40.02 |
-07:56:41.7 |
HIP 82156 |
21.64 |
| 2026-06-14 00:00 |
16:45:36.95 |
-07:56:39.1 |
HIP 82156 |
22.35 |
| 2026-06-14 12:00 |
16:45:33.88 |
-07:56:36.6 |
HIP 82156 |
23.06 |
| 2026-06-15 00:00 |
16:45:30.82 |
-07:56:34.1 |
HIP 82156 |
23.77 |
| 2026-06-15 12:00 |
16:45:27.76 |
-07:56:31.8 |
HIP 82156 |
24.49 |
| 2026-06-16 00:00 |
16:45:24.71 |
-07:56:29.7 |
HIP 82156 |
25.20 |
| 2026-06-16 12:00 |
16:45:21.66 |
-07:56:27.6 |
HIP 82156 |
25.92 |
| 2026-06-17 00:00 |
16:45:18.63 |
-07:56:25.6 |
HIP 82156 |
26.64 |
| 2026-06-17 12:00 |
16:45:15.59 |
-07:56:23.7 |
HIP 82156 |
27.36 |
| 2026-06-18 00:00 |
16:45:12.57 |
-07:56:22.0 |
HIP 81882 |
26.89 |
| 2026-06-18 12:00 |
16:45:09.55 |
-07:56:20.3 |
HIP 81882 |
26.22 |
| 2026-06-19 00:00 |
16:45:06.54 |
-07:56:18.8 |
HIP 81882 |
25.56 |
| 2026-06-19 12:00 |
16:45:03.54 |
-07:56:17.4 |
HIP 81882 |
24.89 |
| 2026-06-20 00:00 |
16:45:00.54 |
-07:56:16.1 |
HIP 81882 |
24.24 |
| 2026-06-20 12:00 |
16:44:57.56 |
-07:56:14.9 |
HIP 81882 |
23.59 |
| 2026-06-21 00:00 |
16:44:54.58 |
-07:56:13.8 |
HIP 81882 |
22.94 |
| 2026-06-21 12:00 |
16:44:51.61 |
-07:56:12.9 |
HIP 81882 |
22.31 |
| 2026-06-22 00:00 |
16:44:48.65 |
-07:56:12.0 |
HIP 81882 |
21.68 |