메타데이터
| 항목 |
값 |
| Designation |
C/1998 Q1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1998-06-29T12:12:45.789120Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:57Z |
| Obs used |
147 |
| NEO |
- |
| M1 |
14.000 |
| K1 |
10.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1998-09-07.0000000 |
| e |
0.99559540 |
| q (au) |
1.577877 |
| a (au) |
358.233578 |
| i (deg) |
32.305811 |
| Ω (om, deg) |
159.784650 |
| ω (w, deg) |
134.732300 |
| M (ma, deg) |
0.010101 |
밝기
산란 + 전체 선형
$$
M_a = (16.842 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
16.842 |
| n |
2.000 |
| gf |
0.998 |
| gb |
-0.819 |
| k |
0.987 |
| 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 |
06:25:00.57 |
-05:40:10.1 |
HIP 30509 |
10.48 |
| 2026-03-26 12:00 |
06:25:00.60 |
-05:39:52.2 |
HIP 30509 |
10.20 |
| 2026-03-27 00:00 |
06:25:00.66 |
-05:39:34.2 |
HIP 30509 |
9.92 |
| 2026-03-27 12:00 |
06:25:00.74 |
-05:39:16.3 |
HIP 30509 |
9.64 |
| 2026-03-28 00:00 |
06:25:00.83 |
-05:38:58.5 |
HIP 30509 |
9.37 |
| 2026-03-28 12:00 |
06:25:00.95 |
-05:38:40.6 |
HIP 30509 |
9.11 |
| 2026-03-29 00:00 |
06:25:01.09 |
-05:38:22.8 |
HIP 30509 |
8.85 |
| 2026-03-29 12:00 |
06:25:01.25 |
-05:38:05.0 |
HIP 30509 |
8.59 |
| 2026-03-30 00:00 |
06:25:01.44 |
-05:37:47.2 |
HIP 30509 |
8.34 |
| 2026-03-30 12:00 |
06:25:01.64 |
-05:37:29.4 |
HIP 30509 |
8.09 |
| 2026-03-31 00:00 |
06:25:01.86 |
-05:37:11.7 |
HIP 30509 |
7.85 |
| 2026-03-31 12:00 |
06:25:02.11 |
-05:36:54.0 |
HIP 30509 |
7.62 |
| 2026-04-01 00:00 |
06:25:02.37 |
-05:36:36.3 |
HIP 30509 |
7.39 |
| 2026-04-01 12:00 |
06:25:02.66 |
-05:36:18.7 |
HIP 30509 |
7.18 |
| 2026-04-02 00:00 |
06:25:02.96 |
-05:36:01.1 |
HIP 30509 |
6.97 |
| 2026-04-02 12:00 |
06:25:03.29 |
-05:35:43.5 |
HIP 30509 |
6.78 |
| 2026-04-03 00:00 |
06:25:03.64 |
-05:35:26.0 |
HIP 30509 |
6.60 |
| 2026-04-03 12:00 |
06:25:04.00 |
-05:35:08.5 |
HIP 30509 |
6.43 |
| 2026-04-04 00:00 |
06:25:04.39 |
-05:34:51.0 |
HIP 30509 |
6.27 |
| 2026-04-04 12:00 |
06:25:04.80 |
-05:34:33.6 |
HIP 30509 |
6.13 |
| 2026-04-05 00:00 |
06:25:05.23 |
-05:34:16.2 |
HIP 30509 |
6.01 |
| 2026-04-05 12:00 |
06:25:05.68 |
-05:33:58.9 |
HIP 30509 |
5.90 |
| 2026-04-06 00:00 |
06:25:06.15 |
-05:33:41.6 |
HIP 30509 |
5.81 |
| 2026-04-06 12:00 |
06:25:06.64 |
-05:33:24.3 |
HIP 30509 |
5.75 |
| 2026-04-07 00:00 |
06:25:07.15 |
-05:33:07.1 |
HIP 30509 |
5.70 |
| 2026-04-07 12:00 |
06:25:07.68 |
-05:32:49.9 |
HIP 30509 |
5.68 |
| 2026-04-08 00:00 |
06:25:08.23 |
-05:32:32.8 |
HIP 30509 |
5.68 |
| 2026-04-08 12:00 |
06:25:08.80 |
-05:32:15.8 |
HIP 30509 |
5.70 |
| 2026-04-09 00:00 |
06:25:09.39 |
-05:31:58.7 |
HIP 30509 |
5.74 |
| 2026-04-09 12:00 |
06:25:10.00 |
-05:31:41.8 |
HIP 30509 |
5.81 |
| 2026-04-10 00:00 |
06:25:10.63 |
-05:31:24.9 |
HIP 30509 |
5.90 |
| 2026-04-10 12:00 |
06:25:11.28 |
-05:31:08.0 |
HIP 30509 |
6.01 |
| 2026-04-11 00:00 |
06:25:11.95 |
-05:30:51.2 |
HIP 30509 |
6.13 |
| 2026-04-11 12:00 |
06:25:12.64 |
-05:30:34.4 |
HIP 30509 |
6.28 |
| 2026-04-12 00:00 |
06:25:13.35 |
-05:30:17.7 |
HIP 30509 |
6.45 |
| 2026-04-12 12:00 |
06:25:14.07 |
-05:30:01.1 |
HIP 30509 |
6.63 |
| 2026-04-13 00:00 |
06:25:14.82 |
-05:29:44.5 |
HIP 30509 |
6.83 |
| 2026-04-13 12:00 |
06:25:15.59 |
-05:29:28.0 |
HIP 30509 |
7.05 |
| 2026-04-14 00:00 |
06:25:16.38 |
-05:29:11.5 |
HIP 30509 |
7.28 |
| 2026-04-14 12:00 |
06:25:17.19 |
-05:28:55.1 |
HIP 30509 |
7.52 |
| 2026-04-15 00:00 |
06:25:18.01 |
-05:28:38.8 |
HIP 30509 |
7.77 |
| 2026-04-15 12:00 |
06:25:18.86 |
-05:28:22.5 |
HIP 30509 |
8.03 |
| 2026-04-16 00:00 |
06:25:19.73 |
-05:28:06.3 |
HIP 30509 |
8.31 |