메타데이터
| 항목 |
값 |
| Designation |
C/2019 T3 (ATLAS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2021-03-02T19:35:34.825920Z |
| Orbit solution date (soln_date, UTC) |
2026-03-07T11:42:49Z |
| Obs used |
1831 |
| NEO |
- |
| M1 |
6.200 |
| K1 |
9.250 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2019-10-06T14:39:22.665600Z |
| Discovery magnitude (MPC) |
18.93 o |
| Discovery observatory (MPC) |
T08 · ATLAS-MLO, Mauna Loa |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2021-06-17.0000000 |
| e |
0.99811606 |
| q (au) |
5.946571 |
| a (au) |
3156.462242 |
| i (deg) |
121.862226 |
| Ω (om, deg) |
139.520856 |
| ω (w, deg) |
112.287720 |
| M (ma, deg) |
0.000590 |
밝기
산란 + 전체 선형
$$
M_a = (0.994 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
0.994 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.902 |
| k |
1.000 |
| 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
잔차 (구간 선형)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 시작일 (UTC) |
끝 (UTC) |
a |
b |
| 2019-01-17 |
2021-02-11 |
+8.5481 |
-6.673 |
| 2021-04-20 |
2022-07-29 |
-1.2800 |
+0.613 |
| 2022-07-29 |
2023-08-18 |
+15.5125 |
-13.337 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
21:11:58.69 |
-43:06:21.6 |
HIP 104794 |
20.08 |
| 2026-06-01 12:00 |
21:11:52.80 |
-43:08:05.9 |
HIP 104794 |
21.10 |
| 2026-06-02 00:00 |
21:11:46.80 |
-43:09:50.2 |
HIP 104508 |
21.97 |
| 2026-06-02 12:00 |
21:11:40.71 |
-43:11:34.7 |
HIP 104508 |
20.05 |
| 2026-06-03 00:00 |
21:11:34.51 |
-43:13:19.2 |
HIP 104508 |
18.15 |
| 2026-06-03 12:00 |
21:11:28.22 |
-43:15:03.8 |
HIP 104508 |
16.27 |
| 2026-06-04 00:00 |
21:11:21.83 |
-43:16:48.4 |
HIP 104508 |
14.44 |
| 2026-06-04 12:00 |
21:11:15.34 |
-43:18:33.2 |
HIP 104508 |
12.67 |
| 2026-06-05 00:00 |
21:11:08.75 |
-43:20:18.0 |
HIP 104508 |
11.01 |
| 2026-06-05 12:00 |
21:11:02.07 |
-43:22:02.8 |
HIP 104508 |
9.51 |
| 2026-06-06 00:00 |
21:10:55.28 |
-43:23:47.7 |
HIP 104508 |
8.27 |
| 2026-06-06 12:00 |
21:10:48.40 |
-43:25:32.6 |
HIP 104508 |
7.44 |
| 2026-06-07 00:00 |
21:10:41.42 |
-43:27:17.6 |
HIP 104508 |
7.16 |
| 2026-06-07 12:00 |
21:10:34.35 |
-43:29:02.6 |
HIP 104508 |
7.52 |
| 2026-06-08 00:00 |
21:10:27.17 |
-43:30:47.6 |
HIP 104508 |
8.43 |
| 2026-06-08 12:00 |
21:10:19.90 |
-43:32:32.6 |
HIP 104508 |
9.75 |
| 2026-06-09 00:00 |
21:10:12.54 |
-43:34:17.6 |
HIP 104508 |
11.34 |
| 2026-06-09 12:00 |
21:10:05.08 |
-43:36:02.6 |
HIP 104508 |
13.11 |
| 2026-06-10 00:00 |
21:09:57.52 |
-43:37:47.6 |
HIP 104437 |
12.28 |
| 2026-06-10 12:00 |
21:09:49.86 |
-43:39:32.5 |
HIP 104437 |
10.05 |
| 2026-06-11 00:00 |
21:09:42.11 |
-43:41:17.5 |
HIP 104437 |
7.83 |
| 2026-06-11 12:00 |
21:09:34.27 |
-43:43:02.4 |
HIP 104437 |
5.61 |
| 2026-06-12 00:00 |
21:09:26.33 |
-43:44:47.2 |
HIP 104437 |
3.42 |
| 2026-06-12 12:00 |
21:09:18.30 |
-43:46:32.1 |
HIP 104437 |
1.48 |
| 2026-06-13 00:00 |
21:09:10.17 |
-43:48:16.8 |
HIP 104437 |
1.75 |
| 2026-06-13 12:00 |
21:09:01.95 |
-43:50:01.5 |
HIP 104437 |
3.79 |
| 2026-06-14 00:00 |
21:08:53.64 |
-43:51:46.1 |
HIP 104437 |
6.03 |
| 2026-06-14 12:00 |
21:08:45.23 |
-43:53:30.7 |
HIP 104437 |
8.31 |
| 2026-06-15 00:00 |
21:08:36.73 |
-43:55:15.1 |
HIP 104437 |
10.62 |
| 2026-06-15 12:00 |
21:08:28.15 |
-43:56:59.5 |
HIP 104437 |
12.94 |
| 2026-06-16 00:00 |
21:08:19.46 |
-43:58:43.7 |
HIP 104236 |
12.75 |
| 2026-06-16 12:00 |
21:08:10.69 |
-44:00:27.8 |
HIP 104236 |
11.54 |
| 2026-06-17 00:00 |
21:08:01.83 |
-44:02:11.9 |
HIP 104236 |
10.70 |
| 2026-06-17 12:00 |
21:07:52.88 |
-44:03:55.7 |
HIP 104236 |
10.33 |
| 2026-06-18 00:00 |
21:07:43.84 |
-44:05:39.5 |
HIP 104236 |
10.48 |
| 2026-06-18 12:00 |
21:07:34.72 |
-44:07:23.1 |
HIP 104286 |
10.13 |
| 2026-06-19 00:00 |
21:07:25.50 |
-44:09:06.5 |
HIP 104286 |
8.67 |
| 2026-06-19 12:00 |
21:07:16.20 |
-44:10:49.8 |
HIP 104286 |
7.69 |
| 2026-06-20 00:00 |
21:07:06.81 |
-44:12:32.9 |
HIP 104286 |
7.40 |
| 2026-06-20 12:00 |
21:06:57.34 |
-44:14:15.9 |
HIP 104286 |
7.89 |
| 2026-06-21 00:00 |
21:06:47.78 |
-44:15:58.6 |
HIP 104286 |
9.03 |
| 2026-06-21 12:00 |
21:06:38.13 |
-44:17:41.2 |
HIP 104286 |
10.63 |
| 2026-06-22 00:00 |
21:06:28.41 |
-44:19:23.6 |
HIP 104286 |
12.51 |