메타데이터
| 항목 |
값 |
| Designation |
C/2015 Y1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2016-05-15T04:24:32.302080Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:33:21Z |
| Obs used |
573 |
| NEO |
- |
| M1 |
6.500 |
| K1 |
21.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2016-02-29.0000000 |
| e |
0.99138537 |
| q (au) |
2.514054 |
| a (au) |
291.835567 |
| i (deg) |
71.219035 |
| Ω (om, deg) |
135.777778 |
| ω (w, deg) |
24.710558 |
| M (ma, deg) |
359.984939 |
밝기
산란 + 전체 선형
$$
M_a = (8.720 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.720 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.760 |
| k |
0.996 |
| 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) |
| 2026-07-29 00:00 |
20:44:25.64 |
-05:28:24.0 |
HIP 102329 |
10.01 |
| 2026-07-29 12:00 |
20:44:20.98 |
-05:28:48.9 |
HIP 102329 |
8.90 |
| 2026-07-30 00:00 |
20:44:16.32 |
-05:29:13.9 |
HIP 102329 |
7.84 |
| 2026-07-30 12:00 |
20:44:11.66 |
-05:29:39.1 |
HIP 102329 |
6.82 |
| 2026-07-31 00:00 |
20:44:07.00 |
-05:30:04.4 |
HIP 102329 |
5.89 |
| 2026-07-31 12:00 |
20:44:02.34 |
-05:30:29.9 |
HIP 102329 |
5.09 |
| 2026-08-01 00:00 |
20:43:57.68 |
-05:30:55.5 |
HIP 102329 |
4.49 |
| 2026-08-01 12:00 |
20:43:53.02 |
-05:31:21.2 |
HIP 102329 |
4.18 |
| 2026-08-02 00:00 |
20:43:48.36 |
-05:31:47.1 |
HIP 102329 |
4.21 |
| 2026-08-02 12:00 |
20:43:43.70 |
-05:32:13.1 |
HIP 102329 |
4.59 |
| 2026-08-03 00:00 |
20:43:39.04 |
-05:32:39.2 |
HIP 102329 |
5.24 |
| 2026-08-03 12:00 |
20:43:34.39 |
-05:33:05.5 |
HIP 102329 |
6.08 |
| 2026-08-04 00:00 |
20:43:29.74 |
-05:33:31.9 |
HIP 102329 |
7.03 |
| 2026-08-04 12:00 |
20:43:25.09 |
-05:33:58.4 |
HIP 102329 |
8.06 |
| 2026-08-05 00:00 |
20:43:20.44 |
-05:34:25.0 |
HIP 102329 |
9.14 |
| 2026-08-05 12:00 |
20:43:15.80 |
-05:34:51.8 |
HIP 102329 |
10.26 |
| 2026-08-06 00:00 |
20:43:11.16 |
-05:35:18.7 |
HIP 102329 |
11.40 |
| 2026-08-06 12:00 |
20:43:06.52 |
-05:35:45.7 |
HIP 102329 |
12.55 |
| 2026-08-07 00:00 |
20:43:01.89 |
-05:36:12.8 |
HIP 102329 |
13.72 |
| 2026-08-07 12:00 |
20:42:57.27 |
-05:36:40.0 |
HIP 102329 |
14.90 |
| 2026-08-08 00:00 |
20:42:52.65 |
-05:37:07.4 |
HIP 102329 |
16.09 |
| 2026-08-08 12:00 |
20:42:48.03 |
-05:37:34.9 |
HIP 102329 |
17.29 |
| 2026-08-09 00:00 |
20:42:43.42 |
-05:38:02.4 |
HIP 102115 |
17.76 |
| 2026-08-09 12:00 |
20:42:38.82 |
-05:38:30.1 |
HIP 102115 |
17.00 |
| 2026-08-10 00:00 |
20:42:34.23 |
-05:38:57.9 |
HIP 102115 |
16.30 |
| 2026-08-10 12:00 |
20:42:29.64 |
-05:39:25.8 |
HIP 102115 |
15.67 |
| 2026-08-11 00:00 |
20:42:25.06 |
-05:39:53.8 |
HIP 102115 |
15.12 |
| 2026-08-11 12:00 |
20:42:20.49 |
-05:40:21.9 |
HIP 102115 |
14.65 |
| 2026-08-12 00:00 |
20:42:15.92 |
-05:40:50.1 |
HIP 102115 |
14.27 |
| 2026-08-12 12:00 |
20:42:11.37 |
-05:41:18.4 |
HIP 102115 |
14.00 |
| 2026-08-13 00:00 |
20:42:06.83 |
-05:41:46.8 |
HIP 102115 |
13.83 |
| 2026-08-13 12:00 |
20:42:02.29 |
-05:42:15.3 |
HIP 102115 |
13.77 |
| 2026-08-14 00:00 |
20:41:57.77 |
-05:42:43.9 |
HIP 102115 |
13.82 |
| 2026-08-14 12:00 |
20:41:53.26 |
-05:43:12.6 |
HIP 102115 |
13.99 |
| 2026-08-15 00:00 |
20:41:48.75 |
-05:43:41.3 |
HIP 102115 |
14.25 |
| 2026-08-15 12:00 |
20:41:44.26 |
-05:44:10.2 |
HIP 102115 |
14.62 |
| 2026-08-16 00:00 |
20:41:39.79 |
-05:44:39.1 |
HIP 102115 |
15.07 |
| 2026-08-16 12:00 |
20:41:35.32 |
-05:45:08.1 |
HIP 102095 |
14.98 |
| 2026-08-17 00:00 |
20:41:30.87 |
-05:45:37.2 |
HIP 102095 |
14.34 |
| 2026-08-17 12:00 |
20:41:26.43 |
-05:46:06.4 |
HIP 102095 |
13.78 |
| 2026-08-18 00:00 |
20:41:22.00 |
-05:46:35.6 |
HIP 102095 |
13.30 |
| 2026-08-18 12:00 |
20:41:17.59 |
-05:47:04.9 |
HIP 102095 |
12.91 |
| 2026-08-19 00:00 |
20:41:13.19 |
-05:47:34.3 |
HIP 102095 |
12.63 |