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
$$
M_a = (13.174 + 5.449\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.174 |
| n |
5.449 |
| gf |
0.913 |
| gb |
-0.901 |
| k |
1.000 |
| δ90 |
6.054 |
| 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 |
16:52:11.04 |
-08:20:23.0 |
HIP 82448 |
24.15 |
| 2026-03-26 12:00 |
16:52:10.06 |
-08:20:11.1 |
HIP 82448 |
24.10 |
| 2026-03-27 00:00 |
16:52:09.04 |
-08:19:59.2 |
HIP 82448 |
24.05 |
| 2026-03-27 12:00 |
16:52:08.00 |
-08:19:47.3 |
HIP 82448 |
23.99 |
| 2026-03-28 00:00 |
16:52:06.94 |
-08:19:35.4 |
HIP 82448 |
23.94 |
| 2026-03-28 12:00 |
16:52:05.84 |
-08:19:23.5 |
HIP 82448 |
23.89 |
| 2026-03-29 00:00 |
16:52:04.72 |
-08:19:11.6 |
HIP 82448 |
23.84 |
| 2026-03-29 12:00 |
16:52:03.58 |
-08:18:59.6 |
HIP 82448 |
23.78 |
| 2026-03-30 00:00 |
16:52:02.41 |
-08:18:47.7 |
HIP 82448 |
23.73 |
| 2026-03-30 12:00 |
16:52:01.21 |
-08:18:35.8 |
HIP 82448 |
23.68 |
| 2026-03-31 00:00 |
16:51:59.98 |
-08:18:23.8 |
HIP 82448 |
23.63 |
| 2026-03-31 12:00 |
16:51:58.73 |
-08:18:11.9 |
HIP 82448 |
23.58 |
| 2026-04-01 00:00 |
16:51:57.46 |
-08:18:00.0 |
HIP 82448 |
23.54 |
| 2026-04-01 12:00 |
16:51:56.16 |
-08:17:48.0 |
HIP 82448 |
23.49 |
| 2026-04-02 00:00 |
16:51:54.83 |
-08:17:36.1 |
HIP 82448 |
23.45 |
| 2026-04-02 12:00 |
16:51:53.48 |
-08:17:24.1 |
HIP 82448 |
23.41 |
| 2026-04-03 00:00 |
16:51:52.11 |
-08:17:12.2 |
HIP 82448 |
23.37 |
| 2026-04-03 12:00 |
16:51:50.70 |
-08:17:00.2 |
HIP 82448 |
23.34 |
| 2026-04-04 00:00 |
16:51:49.28 |
-08:16:48.3 |
HIP 82448 |
23.31 |
| 2026-04-04 12:00 |
16:51:47.83 |
-08:16:36.4 |
HIP 82448 |
23.28 |
| 2026-04-05 00:00 |
16:51:46.35 |
-08:16:24.4 |
HIP 82448 |
23.26 |
| 2026-04-05 12:00 |
16:51:44.85 |
-08:16:12.5 |
HIP 82448 |
23.24 |
| 2026-04-06 00:00 |
16:51:43.32 |
-08:16:00.6 |
HIP 82448 |
23.23 |
| 2026-04-06 12:00 |
16:51:41.77 |
-08:15:48.7 |
HIP 82448 |
23.22 |
| 2026-04-07 00:00 |
16:51:40.20 |
-08:15:36.8 |
HIP 82448 |
23.21 |
| 2026-04-07 12:00 |
16:51:38.60 |
-08:15:24.9 |
HIP 82448 |
23.21 |
| 2026-04-08 00:00 |
16:51:36.97 |
-08:15:13.1 |
HIP 82448 |
23.22 |
| 2026-04-08 12:00 |
16:51:35.33 |
-08:15:01.2 |
HIP 82448 |
23.23 |
| 2026-04-09 00:00 |
16:51:33.66 |
-08:14:49.4 |
HIP 82448 |
23.25 |
| 2026-04-09 12:00 |
16:51:31.96 |
-08:14:37.5 |
HIP 82448 |
23.28 |
| 2026-04-10 00:00 |
16:51:30.24 |
-08:14:25.7 |
HIP 82448 |
23.31 |
| 2026-04-10 12:00 |
16:51:28.50 |
-08:14:13.9 |
HIP 82448 |
23.35 |
| 2026-04-11 00:00 |
16:51:26.74 |
-08:14:02.1 |
HIP 82448 |
23.40 |
| 2026-04-11 12:00 |
16:51:24.95 |
-08:13:50.4 |
HIP 82448 |
23.45 |
| 2026-04-12 00:00 |
16:51:23.13 |
-08:13:38.6 |
HIP 82448 |
23.52 |
| 2026-04-12 12:00 |
16:51:21.30 |
-08:13:26.9 |
HIP 82448 |
23.59 |
| 2026-04-13 00:00 |
16:51:19.44 |
-08:13:15.2 |
HIP 82448 |
23.67 |
| 2026-04-13 12:00 |
16:51:17.56 |
-08:13:03.5 |
HIP 82448 |
23.76 |
| 2026-04-14 00:00 |
16:51:15.66 |
-08:12:51.9 |
HIP 82448 |
23.86 |
| 2026-04-14 12:00 |
16:51:13.73 |
-08:12:40.3 |
HIP 82448 |
23.96 |
| 2026-04-15 00:00 |
16:51:11.78 |
-08:12:28.6 |
HIP 82448 |
24.08 |
| 2026-04-15 12:00 |
16:51:09.81 |
-08:12:17.1 |
HIP 82448 |
24.20 |
| 2026-04-16 00:00 |
16:51:07.82 |
-08:12:05.5 |
HIP 82448 |
24.34 |