메타데이터
| 항목 |
값 |
| Designation |
C/2019 T5 (ATLAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2019-08-01T03:25:59.563200Z |
| Orbit solution date (soln_date, UTC) |
2021-05-02T23:42:54Z |
| Obs used |
80 |
| NEO |
- |
| M1 |
14.900 |
| K1 |
9.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2019-10-08T14:44:47.270400Z |
| Discovery magnitude (MPC) |
18.99 o |
| Discovery observatory (MPC) |
T08 · ATLAS-MLO, Mauna Loa |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2019-11-03.0000000 |
| e |
0.80920592 |
| q (au) |
1.528889 |
| a (au) |
8.013295 |
| i (deg) |
33.422394 |
| Ω (om, deg) |
247.696368 |
| ω (w, deg) |
189.617261 |
| M (ma, deg) |
4.078062 |
밝기
산란 + 전체 선형
$$
M_a = (13.884 + 4.415\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.884 |
| n |
4.415 |
| gf |
0.999 |
| gb |
-1.000 |
| 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) |
| 2026-06-01 00:00 |
16:04:08.25 |
-23:20:54.6 |
HIP 78586 |
21.50 |
| 2026-06-01 12:00 |
16:03:59.15 |
-23:20:18.4 |
HIP 78586 |
19.38 |
| 2026-06-02 00:00 |
16:03:50.06 |
-23:19:42.1 |
HIP 78586 |
17.27 |
| 2026-06-02 12:00 |
16:03:41.00 |
-23:19:05.8 |
HIP 78586 |
15.18 |
| 2026-06-03 00:00 |
16:03:31.95 |
-23:18:29.5 |
HIP 78586 |
13.12 |
| 2026-06-03 12:00 |
16:03:22.92 |
-23:17:53.1 |
HIP 78586 |
11.10 |
| 2026-06-04 00:00 |
16:03:13.90 |
-23:17:16.7 |
HIP 78586 |
9.15 |
| 2026-06-04 12:00 |
16:03:04.91 |
-23:16:40.2 |
HIP 78586 |
7.32 |
| 2026-06-05 00:00 |
16:02:55.94 |
-23:16:03.8 |
HIP 78586 |
5.73 |
| 2026-06-05 12:00 |
16:02:47.00 |
-23:15:27.3 |
HIP 78586 |
4.60 |
| 2026-06-06 00:00 |
16:02:38.07 |
-23:14:50.7 |
HIP 78586 |
4.32 |
| 2026-06-06 12:00 |
16:02:29.17 |
-23:14:14.2 |
HIP 78586 |
5.04 |
| 2026-06-07 00:00 |
16:02:20.29 |
-23:13:37.6 |
HIP 78586 |
6.41 |
| 2026-06-07 12:00 |
16:02:11.44 |
-23:13:01.1 |
HIP 78586 |
8.11 |
| 2026-06-08 00:00 |
16:02:02.61 |
-23:12:24.5 |
HIP 78586 |
9.96 |
| 2026-06-08 12:00 |
16:01:53.81 |
-23:11:47.9 |
HIP 78586 |
11.90 |
| 2026-06-09 00:00 |
16:01:45.04 |
-23:11:11.3 |
HIP 78586 |
13.89 |
| 2026-06-09 12:00 |
16:01:36.30 |
-23:10:34.7 |
HIP 78586 |
15.90 |
| 2026-06-10 00:00 |
16:01:27.59 |
-23:09:58.2 |
HIP 78586 |
17.92 |
| 2026-06-10 12:00 |
16:01:18.91 |
-23:09:21.6 |
HIP 78374 |
18.11 |
| 2026-06-11 00:00 |
16:01:10.26 |
-23:08:45.0 |
HIP 78374 |
16.25 |
| 2026-06-11 12:00 |
16:01:01.64 |
-23:08:08.4 |
HIP 78374 |
14.47 |
| 2026-06-12 00:00 |
16:00:53.05 |
-23:07:31.9 |
HIP 78374 |
12.78 |
| 2026-06-12 12:00 |
16:00:44.50 |
-23:06:55.4 |
HIP 78374 |
11.23 |
| 2026-06-13 00:00 |
16:00:35.98 |
-23:06:18.8 |
HIP 78374 |
9.86 |
| 2026-06-13 12:00 |
16:00:27.50 |
-23:05:42.4 |
HIP 78374 |
8.77 |
| 2026-06-14 00:00 |
16:00:19.05 |
-23:05:05.9 |
HIP 78374 |
8.07 |
| 2026-06-14 12:00 |
16:00:10.65 |
-23:04:29.5 |
HIP 78374 |
7.85 |
| 2026-06-15 00:00 |
16:00:02.28 |
-23:03:53.1 |
HIP 78374 |
8.14 |
| 2026-06-15 12:00 |
15:59:53.95 |
-23:03:16.7 |
HIP 78374 |
8.89 |
| 2026-06-16 00:00 |
15:59:45.66 |
-23:02:40.4 |
HIP 78374 |
9.98 |
| 2026-06-16 12:00 |
15:59:37.41 |
-23:02:04.2 |
HIP 78374 |
11.33 |
| 2026-06-17 00:00 |
15:59:29.20 |
-23:01:27.9 |
HIP 78374 |
12.83 |
| 2026-06-17 12:00 |
15:59:21.03 |
-23:00:51.8 |
HIP 78374 |
14.45 |
| 2026-06-18 00:00 |
15:59:12.91 |
-23:00:15.6 |
HIP 78374 |
16.14 |
| 2026-06-18 12:00 |
15:59:04.83 |
-22:59:39.6 |
HIP 78374 |
17.87 |
| 2026-06-19 00:00 |
15:58:56.79 |
-22:59:03.6 |
HIP 78374 |
19.64 |
| 2026-06-19 12:00 |
15:58:48.81 |
-22:58:27.6 |
HIP 78374 |
21.43 |
| 2026-06-20 00:00 |
15:58:40.86 |
-22:57:51.8 |
HIP 78374 |
23.23 |
| 2026-06-20 12:00 |
15:58:32.97 |
-22:57:15.9 |
HIP 78374 |
25.05 |
| 2026-06-21 00:00 |
15:58:25.12 |
-22:56:40.2 |
HIP 78099 |
26.59 |
| 2026-06-21 12:00 |
15:58:17.32 |
-22:56:04.5 |
HIP 78099 |
25.44 |
| 2026-06-22 00:00 |
15:58:09.57 |
-22:55:29.0 |
HIP 78099 |
24.40 |