메타데이터
| 항목 |
값 |
| Designation |
434P/Tenagra |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2021-10-23T17:11:42.446400Z |
| Orbit solution date (soln_date, UTC) |
2024-02-17T03:13:57Z |
| Obs used |
188 |
| NEO |
- |
| M1 |
9.200 |
| K1 |
18.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2021-09-30T03:48:48.960000Z |
| Discovery magnitude (MPC) |
20.00 T |
| Discovery observatory (MPC) |
Z84 · Calar Alto-Schmidt |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2018-10-04.0000000 |
| e |
0.27168414 |
| q (au) |
3.021756 |
| a (au) |
4.148963 |
| i (deg) |
6.319545 |
| Ω (om, deg) |
288.996686 |
| ω (w, deg) |
126.932278 |
| M (ma, deg) |
229.878650 |
밝기
산란 + 전체 선형
$$
M_a = (12.973 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.973 |
| n |
6.000 |
| gf |
0.999 |
| gb |
-0.688 |
| 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 |
16:42:52.62 |
-27:19:00.3 |
HIP 81821 |
7.85 |
| 2026-03-26 12:00 |
16:42:52.46 |
-27:19:17.8 |
HIP 81821 |
8.13 |
| 2026-03-27 00:00 |
16:42:52.08 |
-27:19:34.8 |
HIP 81821 |
8.40 |
| 2026-03-27 12:00 |
16:42:51.48 |
-27:19:51.4 |
HIP 81821 |
8.66 |
| 2026-03-28 00:00 |
16:42:50.66 |
-27:20:07.6 |
HIP 81821 |
8.91 |
| 2026-03-28 12:00 |
16:42:49.63 |
-27:20:23.3 |
HIP 81821 |
9.15 |
| 2026-03-29 00:00 |
16:42:48.38 |
-27:20:38.6 |
HIP 81821 |
9.39 |
| 2026-03-29 12:00 |
16:42:46.91 |
-27:20:53.4 |
HIP 81821 |
9.63 |
| 2026-03-30 00:00 |
16:42:45.23 |
-27:21:07.7 |
HIP 81821 |
9.88 |
| 2026-03-30 12:00 |
16:42:43.33 |
-27:21:21.6 |
HIP 81821 |
10.14 |
| 2026-03-31 00:00 |
16:42:41.21 |
-27:21:35.1 |
HIP 81821 |
10.41 |
| 2026-03-31 12:00 |
16:42:38.87 |
-27:21:48.0 |
HIP 81821 |
10.70 |
| 2026-04-01 00:00 |
16:42:36.32 |
-27:22:00.5 |
HIP 81821 |
11.01 |
| 2026-04-01 12:00 |
16:42:33.55 |
-27:22:12.6 |
HIP 81821 |
11.35 |
| 2026-04-02 00:00 |
16:42:30.57 |
-27:22:24.1 |
HIP 81821 |
11.73 |
| 2026-04-02 12:00 |
16:42:27.37 |
-27:22:35.2 |
HIP 81821 |
12.14 |
| 2026-04-03 00:00 |
16:42:23.95 |
-27:22:45.8 |
HIP 81821 |
12.59 |
| 2026-04-03 12:00 |
16:42:20.31 |
-27:22:55.9 |
HIP 81821 |
13.09 |
| 2026-04-04 00:00 |
16:42:16.46 |
-27:23:05.5 |
HIP 81821 |
13.64 |
| 2026-04-04 12:00 |
16:42:12.39 |
-27:23:14.6 |
HIP 81821 |
14.24 |
| 2026-04-05 00:00 |
16:42:08.11 |
-27:23:23.3 |
HIP 81821 |
14.89 |
| 2026-04-05 12:00 |
16:42:03.61 |
-27:23:31.4 |
HIP 81821 |
15.60 |
| 2026-04-06 00:00 |
16:41:58.89 |
-27:23:39.0 |
HIP 81821 |
16.36 |
| 2026-04-06 12:00 |
16:41:53.96 |
-27:23:46.1 |
HIP 81821 |
17.19 |
| 2026-04-07 00:00 |
16:41:48.81 |
-27:23:52.7 |
HIP 81747 |
17.56 |
| 2026-04-07 12:00 |
16:41:43.45 |
-27:23:58.8 |
HIP 81747 |
17.71 |
| 2026-04-08 00:00 |
16:41:37.87 |
-27:24:04.3 |
HIP 81747 |
17.95 |
| 2026-04-08 12:00 |
16:41:32.08 |
-27:24:09.4 |
HIP 81747 |
18.26 |
| 2026-04-09 00:00 |
16:41:26.08 |
-27:24:13.9 |
HIP 81747 |
18.67 |
| 2026-04-09 12:00 |
16:41:19.86 |
-27:24:17.8 |
HIP 81747 |
19.16 |
| 2026-04-10 00:00 |
16:41:13.43 |
-27:24:21.3 |
HIP 81747 |
19.76 |
| 2026-04-10 12:00 |
16:41:06.79 |
-27:24:24.2 |
HIP 81747 |
20.45 |
| 2026-04-11 00:00 |
16:40:59.93 |
-27:24:26.5 |
HIP 81566 |
20.94 |
| 2026-04-11 12:00 |
16:40:52.86 |
-27:24:28.3 |
HIP 81566 |
19.49 |
| 2026-04-12 00:00 |
16:40:45.59 |
-27:24:29.5 |
HIP 81566 |
18.01 |
| 2026-04-12 12:00 |
16:40:38.10 |
-27:24:30.2 |
HIP 81566 |
16.51 |
| 2026-04-13 00:00 |
16:40:30.41 |
-27:24:30.4 |
HIP 81566 |
15.00 |
| 2026-04-13 12:00 |
16:40:22.50 |
-27:24:29.9 |
HIP 81566 |
13.50 |
| 2026-04-14 00:00 |
16:40:14.39 |
-27:24:28.9 |
HIP 81566 |
12.02 |
| 2026-04-14 12:00 |
16:40:06.07 |
-27:24:27.4 |
HIP 81566 |
10.60 |
| 2026-04-15 00:00 |
16:39:57.55 |
-27:24:25.2 |
HIP 81566 |
9.29 |
| 2026-04-15 12:00 |
16:39:48.82 |
-27:24:22.5 |
HIP 81566 |
8.19 |
| 2026-04-16 00:00 |
16:39:39.88 |
-27:24:19.2 |
HIP 81566 |
7.42 |