메타데이터
| 항목 |
값 |
| Designation |
C/2012 T5 (Bressi) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2013-02-24T01:24:11.816640Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:24Z |
| Obs used |
661 |
| NEO |
- |
| M1 |
15.300 |
| K1 |
4.750 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2012-11-22.0000000 |
| e |
1.00043352 |
| q (au) |
0.322826 |
| a (au) |
-744.660040 |
| i (deg) |
72.098415 |
| Ω (om, deg) |
230.594454 |
| ω (w, deg) |
318.094191 |
| M (ma, deg) |
-0.004562 |
밝기
산란 + 전체 선형
$$
M_a = (14.819 + 4.103\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.819 |
| n |
4.103 |
| gf |
0.997 |
| gb |
-0.787 |
| k |
0.971 |
| δ90 |
9.997 |
| 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 |
| 2012-10-14 |
2012-11-06 |
-18.5544 |
+6.497 |
| 2012-11-06 |
2013-01-07 |
+0.1230 |
+0.205 |
| 2013-01-07 |
2013-02-10 |
+7.5691 |
-0.903 |
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 |
23:59:41.64 |
+55:15:26.4 |
HIP 118280 |
8.52 |
| 2026-06-01 12:00 |
23:59:43.76 |
+55:16:12.6 |
HIP 118280 |
9.34 |
| 2026-06-02 00:00 |
23:59:45.85 |
+55:16:58.8 |
HIP 118280 |
10.15 |
| 2026-06-02 12:00 |
23:59:47.88 |
+55:17:45.0 |
HIP 118280 |
10.97 |
| 2026-06-03 00:00 |
23:59:49.87 |
+55:18:31.3 |
HIP 118280 |
11.79 |
| 2026-06-03 12:00 |
23:59:51.81 |
+55:19:17.6 |
HIP 118280 |
12.60 |
| 2026-06-04 00:00 |
23:59:53.71 |
+55:20:03.9 |
HIP 118280 |
13.42 |
| 2026-06-04 12:00 |
23:59:55.56 |
+55:20:50.2 |
HIP 118280 |
14.23 |
| 2026-06-05 00:00 |
23:59:57.37 |
+55:21:36.5 |
HIP 118280 |
15.05 |
| 2026-06-05 12:00 |
23:59:59.13 |
+55:22:22.8 |
HIP 118280 |
15.86 |
| 2026-06-06 00:00 |
00:00:00.84 |
+55:23:09.1 |
HIP 118280 |
16.67 |
| 2026-06-06 12:00 |
00:00:02.50 |
+55:23:55.5 |
HIP 118280 |
17.47 |
| 2026-06-07 00:00 |
00:00:04.12 |
+55:24:41.8 |
HIP 118280 |
18.28 |
| 2026-06-07 12:00 |
00:00:05.69 |
+55:25:28.2 |
HIP 59 |
18.60 |
| 2026-06-08 00:00 |
00:00:07.21 |
+55:26:14.5 |
HIP 59 |
17.79 |
| 2026-06-08 12:00 |
00:00:08.69 |
+55:27:00.8 |
HIP 59 |
16.99 |
| 2026-06-09 00:00 |
00:00:10.11 |
+55:27:47.1 |
HIP 59 |
16.20 |
| 2026-06-09 12:00 |
00:00:11.49 |
+55:28:33.4 |
HIP 59 |
15.40 |
| 2026-06-10 00:00 |
00:00:12.82 |
+55:29:19.7 |
HIP 59 |
14.61 |
| 2026-06-10 12:00 |
00:00:14.10 |
+55:30:05.9 |
HIP 59 |
13.82 |
| 2026-06-11 00:00 |
00:00:15.34 |
+55:30:52.2 |
HIP 59 |
13.03 |
| 2026-06-11 12:00 |
00:00:16.52 |
+55:31:38.4 |
HIP 59 |
12.24 |
| 2026-06-12 00:00 |
00:00:17.66 |
+55:32:24.5 |
HIP 59 |
11.46 |
| 2026-06-12 12:00 |
00:00:18.74 |
+55:33:10.7 |
HIP 59 |
10.68 |
| 2026-06-13 00:00 |
00:00:19.78 |
+55:33:56.8 |
HIP 59 |
9.90 |
| 2026-06-13 12:00 |
00:00:20.77 |
+55:34:42.8 |
HIP 59 |
9.13 |
| 2026-06-14 00:00 |
00:00:21.71 |
+55:35:28.8 |
HIP 59 |
8.37 |
| 2026-06-14 12:00 |
00:00:22.60 |
+55:36:14.8 |
HIP 59 |
7.60 |
| 2026-06-15 00:00 |
00:00:23.44 |
+55:37:00.7 |
HIP 59 |
6.85 |
| 2026-06-15 12:00 |
00:00:24.23 |
+55:37:46.6 |
HIP 59 |
6.10 |
| 2026-06-16 00:00 |
00:00:24.97 |
+55:38:32.4 |
HIP 59 |
5.37 |
| 2026-06-16 12:00 |
00:00:25.66 |
+55:39:18.1 |
HIP 59 |
4.65 |
| 2026-06-17 00:00 |
00:00:26.30 |
+55:40:03.8 |
HIP 59 |
3.95 |
| 2026-06-17 12:00 |
00:00:26.88 |
+55:40:49.4 |
HIP 59 |
3.29 |
| 2026-06-18 00:00 |
00:00:27.42 |
+55:41:35.0 |
HIP 59 |
2.69 |
| 2026-06-18 12:00 |
00:00:27.91 |
+55:42:20.4 |
HIP 59 |
2.21 |
| 2026-06-19 00:00 |
00:00:28.35 |
+55:43:05.8 |
HIP 59 |
1.92 |
| 2026-06-19 12:00 |
00:00:28.74 |
+55:43:51.1 |
HIP 59 |
1.92 |
| 2026-06-20 00:00 |
00:00:29.08 |
+55:44:36.3 |
HIP 59 |
2.20 |
| 2026-06-20 12:00 |
00:00:29.37 |
+55:45:21.5 |
HIP 59 |
2.67 |
| 2026-06-21 00:00 |
00:00:29.60 |
+55:46:06.5 |
HIP 59 |
3.26 |
| 2026-06-21 12:00 |
00:00:29.79 |
+55:46:51.4 |
HIP 59 |
3.90 |
| 2026-06-22 00:00 |
00:00:29.92 |
+55:47:36.3 |
HIP 59 |
4.58 |