메타데이터
| 항목 |
값 |
| Designation |
C/2018 S3 (TESS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2016-06-29T12:55:24.101760Z |
| Orbit solution date (soln_date, UTC) |
2023-02-23T19:42:03Z |
| Obs used |
35 |
| NEO |
- |
| M1 |
10.400 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2018-09-22T09:14:41.107200Z |
| Discovery magnitude (MPC) |
18.80 G |
| Discovery observatory (MPC) |
C57 · TESS |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2017-03-08.0000000 |
| e |
1.00131593 |
| q (au) |
7.999920 |
| a (au) |
-6079.309391 |
| i (deg) |
78.418208 |
| Ω (om, deg) |
24.982385 |
| ω (w, deg) |
263.852517 |
| M (ma, deg) |
0.000523 |
밝기
산란 + 전체 선형
$$
M_a = (11.026 + 4.379\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.026 |
| n |
4.379 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.800 |
| 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) |
| 2026-03-26 00:00 |
01:24:46.04 |
+15:40:47.3 |
HIP 6535 |
24.95 |
| 2026-03-26 12:00 |
01:24:50.90 |
+15:41:29.0 |
HIP 6535 |
26.10 |
| 2026-03-27 00:00 |
01:24:55.76 |
+15:42:10.8 |
HIP 6535 |
27.27 |
| 2026-03-27 12:00 |
01:25:00.64 |
+15:42:52.8 |
HIP 6535 |
28.46 |
| 2026-03-28 00:00 |
01:25:05.53 |
+15:43:34.9 |
HIP 6535 |
29.66 |
| 2026-03-28 12:00 |
01:25:10.43 |
+15:44:17.1 |
HIP 6535 |
30.89 |
| 2026-03-29 00:00 |
01:25:15.34 |
+15:44:59.4 |
HIP 6649 |
30.45 |
| 2026-03-29 12:00 |
01:25:20.26 |
+15:45:41.8 |
HIP 6649 |
29.73 |
| 2026-03-30 00:00 |
01:25:25.19 |
+15:46:24.4 |
HIP 6649 |
29.05 |
| 2026-03-30 12:00 |
01:25:30.13 |
+15:47:07.1 |
HIP 6649 |
28.43 |
| 2026-03-31 00:00 |
01:25:35.08 |
+15:47:49.9 |
HIP 6649 |
27.86 |
| 2026-03-31 12:00 |
01:25:40.04 |
+15:48:32.8 |
HIP 6649 |
27.34 |
| 2026-04-01 00:00 |
01:25:45.00 |
+15:49:15.8 |
HIP 6649 |
26.89 |
| 2026-04-01 12:00 |
01:25:49.97 |
+15:49:59.0 |
HIP 6649 |
26.50 |
| 2026-04-02 00:00 |
01:25:54.96 |
+15:50:42.2 |
HIP 6649 |
26.18 |
| 2026-04-02 12:00 |
01:25:59.95 |
+15:51:25.6 |
HIP 6649 |
25.93 |
| 2026-04-03 00:00 |
01:26:04.94 |
+15:52:09.1 |
HIP 6649 |
25.75 |
| 2026-04-03 12:00 |
01:26:09.94 |
+15:52:52.6 |
HIP 6649 |
25.64 |
| 2026-04-04 00:00 |
01:26:14.95 |
+15:53:36.3 |
HIP 6649 |
25.61 |
| 2026-04-04 12:00 |
01:26:19.97 |
+15:54:20.1 |
HIP 6837 |
24.69 |
| 2026-04-05 00:00 |
01:26:24.99 |
+15:55:04.0 |
HIP 6837 |
23.37 |
| 2026-04-05 12:00 |
01:26:30.02 |
+15:55:48.0 |
HIP 6837 |
22.05 |
| 2026-04-06 00:00 |
01:26:35.05 |
+15:56:32.0 |
HIP 6837 |
20.75 |
| 2026-04-06 12:00 |
01:26:40.09 |
+15:57:16.2 |
HIP 6837 |
19.46 |
| 2026-04-07 00:00 |
01:26:45.13 |
+15:58:00.5 |
HIP 6837 |
18.18 |
| 2026-04-07 12:00 |
01:26:50.18 |
+15:58:44.8 |
HIP 6837 |
16.93 |
| 2026-04-08 00:00 |
01:26:55.23 |
+15:59:29.3 |
HIP 6837 |
15.71 |
| 2026-04-08 12:00 |
01:27:00.28 |
+16:00:13.8 |
HIP 6837 |
14.52 |
| 2026-04-09 00:00 |
01:27:05.34 |
+16:00:58.5 |
HIP 6837 |
13.38 |
| 2026-04-09 12:00 |
01:27:10.40 |
+16:01:43.2 |
HIP 6837 |
12.30 |
| 2026-04-10 00:00 |
01:27:15.47 |
+16:02:28.0 |
HIP 6837 |
11.30 |
| 2026-04-10 12:00 |
01:27:20.53 |
+16:03:12.8 |
HIP 6837 |
10.39 |
| 2026-04-11 00:00 |
01:27:25.60 |
+16:03:57.8 |
HIP 6837 |
9.61 |
| 2026-04-11 12:00 |
01:27:30.67 |
+16:04:42.8 |
HIP 6837 |
9.00 |
| 2026-04-12 00:00 |
01:27:35.74 |
+16:05:27.9 |
HIP 6837 |
8.58 |
| 2026-04-12 12:00 |
01:27:40.81 |
+16:06:13.1 |
HIP 6837 |
8.39 |
| 2026-04-13 00:00 |
01:27:45.89 |
+16:06:58.4 |
HIP 6837 |
8.44 |
| 2026-04-13 12:00 |
01:27:50.96 |
+16:07:43.7 |
HIP 6837 |
8.73 |
| 2026-04-14 00:00 |
01:27:56.03 |
+16:08:29.1 |
HIP 6837 |
9.24 |
| 2026-04-14 12:00 |
01:28:01.10 |
+16:09:14.6 |
HIP 6837 |
9.94 |
| 2026-04-15 00:00 |
01:28:06.18 |
+16:10:00.1 |
HIP 6837 |
10.78 |
| 2026-04-15 12:00 |
01:28:11.25 |
+16:10:45.7 |
HIP 6837 |
11.74 |
| 2026-04-16 00:00 |
01:28:16.32 |
+16:11:31.4 |
HIP 6837 |
12.79 |