메타데이터
| 항목 |
값 |
| Designation |
274P/Tombaugh-Tenagra |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2013-02-23T13:58:11.107200Z |
| Orbit solution date (soln_date, UTC) |
2024-04-13T16:43:06Z |
| Obs used |
915 |
| NEO |
- |
| M1 |
10.900 |
| K1 |
14.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-12-01.0000000 |
| e |
0.43970884 |
| q (au) |
2.445176 |
| a (au) |
4.364118 |
| i (deg) |
15.832722 |
| Ω (om, deg) |
81.368553 |
| ω (w, deg) |
38.590174 |
| M (ma, deg) |
109.234659 |
밝기
산란 + 전체 선형
$$
M_a = (10.175 + 5.885\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.175 |
| n |
5.885 |
| gf |
1.000 |
| gb |
-0.893 |
| 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
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
20:10:25.23 |
-29:24:38.3 |
HIP 99350 |
15.02 |
| 2026-06-01 12:00 |
20:10:17.43 |
-29:26:00.4 |
HIP 99350 |
13.05 |
| 2026-06-02 00:00 |
20:10:09.47 |
-29:27:22.9 |
HIP 99350 |
11.15 |
| 2026-06-02 12:00 |
20:10:01.34 |
-29:28:45.6 |
HIP 99350 |
9.38 |
| 2026-06-03 00:00 |
20:09:53.03 |
-29:30:08.6 |
HIP 99350 |
7.84 |
| 2026-06-03 12:00 |
20:09:44.56 |
-29:31:31.9 |
HIP 99350 |
6.75 |
| 2026-06-04 00:00 |
20:09:35.92 |
-29:32:55.4 |
HIP 99350 |
6.35 |
| 2026-06-04 12:00 |
20:09:27.11 |
-29:34:19.2 |
HIP 99350 |
6.82 |
| 2026-06-05 00:00 |
20:09:18.13 |
-29:35:43.2 |
HIP 99350 |
8.03 |
| 2026-06-05 12:00 |
20:09:08.99 |
-29:37:07.4 |
HIP 99350 |
9.73 |
| 2026-06-06 00:00 |
20:08:59.68 |
-29:38:31.9 |
HIP 99350 |
11.73 |
| 2026-06-06 12:00 |
20:08:50.20 |
-29:39:56.5 |
HIP 99350 |
13.91 |
| 2026-06-07 00:00 |
20:08:40.56 |
-29:41:21.4 |
HIP 99350 |
16.22 |
| 2026-06-07 12:00 |
20:08:30.76 |
-29:42:46.4 |
HIP 99121 |
14.54 |
| 2026-06-08 00:00 |
20:08:20.80 |
-29:44:11.6 |
HIP 99121 |
12.41 |
| 2026-06-08 12:00 |
20:08:10.67 |
-29:45:37.0 |
HIP 99121 |
10.44 |
| 2026-06-09 00:00 |
20:08:00.38 |
-29:47:02.5 |
HIP 99121 |
8.79 |
| 2026-06-09 12:00 |
20:07:49.93 |
-29:48:28.2 |
HIP 99121 |
7.70 |
| 2026-06-10 00:00 |
20:07:39.33 |
-29:49:54.0 |
HIP 99121 |
7.45 |
| 2026-06-10 12:00 |
20:07:28.56 |
-29:51:20.0 |
HIP 99121 |
8.15 |
| 2026-06-11 00:00 |
20:07:17.64 |
-29:52:46.1 |
HIP 99121 |
9.61 |
| 2026-06-11 12:00 |
20:07:06.56 |
-29:54:12.2 |
HIP 99121 |
11.57 |
| 2026-06-12 00:00 |
20:06:55.33 |
-29:55:38.5 |
HIP 99121 |
13.84 |
| 2026-06-12 12:00 |
20:06:43.94 |
-29:57:04.9 |
HIP 99121 |
16.31 |
| 2026-06-13 00:00 |
20:06:32.40 |
-29:58:31.3 |
HIP 99121 |
18.91 |
| 2026-06-13 12:00 |
20:06:20.71 |
-29:59:57.8 |
HIP 99121 |
21.60 |
| 2026-06-14 00:00 |
20:06:08.87 |
-30:01:24.3 |
HIP 98847 |
24.18 |
| 2026-06-14 12:00 |
20:05:56.88 |
-30:02:50.9 |
HIP 98847 |
21.24 |
| 2026-06-15 00:00 |
20:05:44.75 |
-30:04:17.5 |
HIP 98847 |
18.29 |
| 2026-06-15 12:00 |
20:05:32.47 |
-30:05:44.1 |
HIP 98847 |
15.33 |
| 2026-06-16 00:00 |
20:05:20.04 |
-30:07:10.7 |
HIP 98847 |
12.36 |
| 2026-06-16 12:00 |
20:05:07.48 |
-30:08:37.4 |
HIP 98847 |
9.42 |
| 2026-06-17 00:00 |
20:04:54.77 |
-30:10:04.0 |
HIP 98847 |
6.58 |
| 2026-06-17 12:00 |
20:04:41.92 |
-30:11:30.5 |
HIP 98847 |
4.10 |
| 2026-06-18 00:00 |
20:04:28.94 |
-30:12:57.0 |
HIP 98847 |
3.15 |
| 2026-06-18 12:00 |
20:04:15.82 |
-30:14:23.5 |
HIP 98847 |
4.79 |
| 2026-06-19 00:00 |
20:04:02.57 |
-30:15:49.9 |
HIP 98847 |
7.52 |
| 2026-06-19 12:00 |
20:03:49.18 |
-30:17:16.2 |
HIP 98847 |
10.54 |
| 2026-06-20 00:00 |
20:03:35.67 |
-30:18:42.4 |
HIP 98847 |
13.67 |
| 2026-06-20 12:00 |
20:03:22.02 |
-30:20:08.5 |
HIP 98847 |
16.87 |
| 2026-06-21 00:00 |
20:03:08.25 |
-30:21:34.5 |
HIP 98847 |
20.12 |
| 2026-06-21 12:00 |
20:02:54.35 |
-30:23:00.3 |
HIP 98847 |
23.40 |
| 2026-06-22 00:00 |
20:02:40.33 |
-30:24:26.1 |
HIP 98546 |
20.85 |