메타데이터
| 항목 |
값 |
| Designation |
C/2015 TQ209 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2016-08-27T14:18:38.540160Z |
| Orbit solution date (soln_date, UTC) |
2022-07-06T03:12:21Z |
| Obs used |
406 |
| NEO |
- |
| M1 |
10.900 |
| K1 |
8.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-12-20.0000000 |
| e |
0.99892368 |
| q (au) |
1.413143 |
| a (au) |
1312.933283 |
| i (deg) |
11.392694 |
| Ω (om, deg) |
224.083104 |
| ω (w, deg) |
281.506087 |
| M (ma, deg) |
359.994788 |
밝기
산란 + 전체 선형
$$
M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
- |
| n |
- |
| gf |
- |
| gb |
- |
| k |
- |
| δ90 |
- |
| 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 |
19:48:36.70 |
-09:32:25.4 |
HIP 97380 |
18.77 |
| 2026-07-29 12:00 |
19:48:32.20 |
-09:32:40.1 |
HIP 97380 |
17.66 |
| 2026-07-30 00:00 |
19:48:27.70 |
-09:32:55.0 |
HIP 97380 |
16.57 |
| 2026-07-30 12:00 |
19:48:23.22 |
-09:33:09.9 |
HIP 97380 |
15.48 |
| 2026-07-31 00:00 |
19:48:18.75 |
-09:33:24.8 |
HIP 97380 |
14.41 |
| 2026-07-31 12:00 |
19:48:14.28 |
-09:33:39.9 |
HIP 97380 |
13.34 |
| 2026-08-01 00:00 |
19:48:09.83 |
-09:33:55.1 |
HIP 97380 |
12.28 |
| 2026-08-01 12:00 |
19:48:05.39 |
-09:34:10.4 |
HIP 97380 |
11.24 |
| 2026-08-02 00:00 |
19:48:00.96 |
-09:34:25.7 |
HIP 97380 |
10.22 |
| 2026-08-02 12:00 |
19:47:56.54 |
-09:34:41.2 |
HIP 97380 |
9.22 |
| 2026-08-03 00:00 |
19:47:52.13 |
-09:34:56.7 |
HIP 97380 |
8.25 |
| 2026-08-03 12:00 |
19:47:47.74 |
-09:35:12.3 |
HIP 97380 |
7.33 |
| 2026-08-04 00:00 |
19:47:43.36 |
-09:35:28.0 |
HIP 97380 |
6.47 |
| 2026-08-04 12:00 |
19:47:38.99 |
-09:35:43.7 |
HIP 97380 |
5.69 |
| 2026-08-05 00:00 |
19:47:34.63 |
-09:35:59.6 |
HIP 97380 |
5.05 |
| 2026-08-05 12:00 |
19:47:30.29 |
-09:36:15.5 |
HIP 97380 |
4.58 |
| 2026-08-06 00:00 |
19:47:25.96 |
-09:36:31.5 |
HIP 97380 |
4.34 |
| 2026-08-06 12:00 |
19:47:21.65 |
-09:36:47.6 |
HIP 97380 |
4.37 |
| 2026-08-07 00:00 |
19:47:17.35 |
-09:37:03.7 |
HIP 97380 |
4.67 |
| 2026-08-07 12:00 |
19:47:13.07 |
-09:37:20.0 |
HIP 97380 |
5.18 |
| 2026-08-08 00:00 |
19:47:08.80 |
-09:37:36.3 |
HIP 97380 |
5.84 |
| 2026-08-08 12:00 |
19:47:04.55 |
-09:37:52.6 |
HIP 97380 |
6.62 |
| 2026-08-09 00:00 |
19:47:00.31 |
-09:38:09.1 |
HIP 97380 |
7.47 |
| 2026-08-09 12:00 |
19:46:56.09 |
-09:38:25.6 |
HIP 97380 |
8.36 |
| 2026-08-10 00:00 |
19:46:51.89 |
-09:38:42.2 |
HIP 97380 |
9.29 |
| 2026-08-10 12:00 |
19:46:47.71 |
-09:38:58.8 |
HIP 97380 |
10.25 |
| 2026-08-11 00:00 |
19:46:43.54 |
-09:39:15.5 |
HIP 97380 |
11.21 |
| 2026-08-11 12:00 |
19:46:39.40 |
-09:39:32.3 |
HIP 97380 |
12.20 |
| 2026-08-12 00:00 |
19:46:35.27 |
-09:39:49.1 |
HIP 97380 |
13.18 |
| 2026-08-12 12:00 |
19:46:31.16 |
-09:40:06.0 |
HIP 97380 |
14.18 |
| 2026-08-13 00:00 |
19:46:27.07 |
-09:40:22.9 |
HIP 97380 |
15.17 |
| 2026-08-13 12:00 |
19:46:23.00 |
-09:40:39.9 |
HIP 97380 |
16.17 |
| 2026-08-14 00:00 |
19:46:18.95 |
-09:40:57.0 |
HIP 97380 |
17.17 |
| 2026-08-14 12:00 |
19:46:14.92 |
-09:41:14.1 |
HIP 97380 |
18.16 |
| 2026-08-15 00:00 |
19:46:10.91 |
-09:41:31.2 |
HIP 97380 |
19.16 |
| 2026-08-15 12:00 |
19:46:06.92 |
-09:41:48.4 |
HIP 97380 |
20.15 |
| 2026-08-16 00:00 |
19:46:02.96 |
-09:42:05.7 |
HIP 97380 |
21.15 |
| 2026-08-16 12:00 |
19:45:59.01 |
-09:42:23.0 |
HIP 97380 |
22.13 |
| 2026-08-17 00:00 |
19:45:55.09 |
-09:42:40.3 |
HIP 97380 |
23.12 |
| 2026-08-17 12:00 |
19:45:51.19 |
-09:42:57.7 |
HIP 97380 |
24.10 |
| 2026-08-18 00:00 |
19:45:47.32 |
-09:43:15.2 |
HIP 97380 |
25.08 |
| 2026-08-18 12:00 |
19:45:43.46 |
-09:43:32.6 |
HIP 97380 |
26.05 |
| 2026-08-19 00:00 |
19:45:39.63 |
-09:43:50.1 |
HIP 97380 |
27.02 |