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) |
| 2026-03-26 00:00 |
19:57:44.66 |
-09:46:16.2 |
HIP 98218 |
16.23 |
| 2026-03-26 12:00 |
19:57:46.84 |
-09:45:56.7 |
HIP 98218 |
16.64 |
| 2026-03-27 00:00 |
19:57:48.99 |
-09:45:37.4 |
HIP 98218 |
17.07 |
| 2026-03-27 12:00 |
19:57:51.10 |
-09:45:18.1 |
HIP 98218 |
17.50 |
| 2026-03-28 00:00 |
19:57:53.17 |
-09:44:58.8 |
HIP 98218 |
17.94 |
| 2026-03-28 12:00 |
19:57:55.21 |
-09:44:39.7 |
HIP 98218 |
18.39 |
| 2026-03-29 00:00 |
19:57:57.20 |
-09:44:20.6 |
HIP 98218 |
18.84 |
| 2026-03-29 12:00 |
19:57:59.16 |
-09:44:01.5 |
HIP 98218 |
19.29 |
| 2026-03-30 00:00 |
19:58:01.08 |
-09:43:42.5 |
HIP 98218 |
19.74 |
| 2026-03-30 12:00 |
19:58:02.95 |
-09:43:23.6 |
HIP 98218 |
20.20 |
| 2026-03-31 00:00 |
19:58:04.79 |
-09:43:04.8 |
HIP 98218 |
20.66 |
| 2026-03-31 12:00 |
19:58:06.59 |
-09:42:46.0 |
HIP 98218 |
21.11 |
| 2026-04-01 00:00 |
19:58:08.36 |
-09:42:27.3 |
HIP 98218 |
21.57 |
| 2026-04-01 12:00 |
19:58:10.08 |
-09:42:08.7 |
HIP 98218 |
22.02 |
| 2026-04-02 00:00 |
19:58:11.76 |
-09:41:50.1 |
HIP 98218 |
22.47 |
| 2026-04-02 12:00 |
19:58:13.41 |
-09:41:31.6 |
HIP 98218 |
22.92 |
| 2026-04-03 00:00 |
19:58:15.01 |
-09:41:13.2 |
HIP 98218 |
23.37 |
| 2026-04-03 12:00 |
19:58:16.57 |
-09:40:54.9 |
HIP 98218 |
23.81 |
| 2026-04-04 00:00 |
19:58:18.10 |
-09:40:36.7 |
HIP 98218 |
24.25 |
| 2026-04-04 12:00 |
19:58:19.58 |
-09:40:18.5 |
HIP 98218 |
24.69 |
| 2026-04-05 00:00 |
19:58:21.03 |
-09:40:00.4 |
HIP 98218 |
25.12 |
| 2026-04-05 12:00 |
19:58:22.44 |
-09:39:42.4 |
HIP 98218 |
25.55 |
| 2026-04-06 00:00 |
19:58:23.80 |
-09:39:24.5 |
HIP 98218 |
25.97 |
| 2026-04-06 12:00 |
19:58:25.13 |
-09:39:06.7 |
HIP 98270 |
26.24 |
| 2026-04-07 00:00 |
19:58:26.41 |
-09:38:48.9 |
HIP 98270 |
26.02 |
| 2026-04-07 12:00 |
19:58:27.66 |
-09:38:31.3 |
HIP 98270 |
25.81 |
| 2026-04-08 00:00 |
19:58:28.86 |
-09:38:13.7 |
HIP 98270 |
25.60 |
| 2026-04-08 12:00 |
19:58:30.02 |
-09:37:56.2 |
HIP 98270 |
25.39 |
| 2026-04-09 00:00 |
19:58:31.15 |
-09:37:38.8 |
HIP 98270 |
25.19 |
| 2026-04-09 12:00 |
19:58:32.23 |
-09:37:21.5 |
HIP 98270 |
24.99 |
| 2026-04-10 00:00 |
19:58:33.27 |
-09:37:04.3 |
HIP 98270 |
24.79 |
| 2026-04-10 12:00 |
19:58:34.27 |
-09:36:47.2 |
HIP 98270 |
24.60 |
| 2026-04-11 00:00 |
19:58:35.23 |
-09:36:30.2 |
HIP 98270 |
24.40 |
| 2026-04-11 12:00 |
19:58:36.15 |
-09:36:13.3 |
HIP 98270 |
24.21 |
| 2026-04-12 00:00 |
19:58:37.02 |
-09:35:56.4 |
HIP 98270 |
24.03 |
| 2026-04-12 12:00 |
19:58:37.86 |
-09:35:39.7 |
HIP 98270 |
23.84 |
| 2026-04-13 00:00 |
19:58:38.65 |
-09:35:23.1 |
HIP 98270 |
23.66 |
| 2026-04-13 12:00 |
19:58:39.41 |
-09:35:06.6 |
HIP 98270 |
23.47 |
| 2026-04-14 00:00 |
19:58:40.12 |
-09:34:50.2 |
HIP 98270 |
23.29 |
| 2026-04-14 12:00 |
19:58:40.79 |
-09:34:33.9 |
HIP 98270 |
23.11 |
| 2026-04-15 00:00 |
19:58:41.42 |
-09:34:17.7 |
HIP 98270 |
22.93 |
| 2026-04-15 12:00 |
19:58:42.00 |
-09:34:01.6 |
HIP 98270 |
22.75 |
| 2026-04-16 00:00 |
19:58:42.55 |
-09:33:45.6 |
HIP 98270 |
22.56 |