13P/Olbers
메타데이터
| 항목 |
값 |
| Designation |
13P/Olbers |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-06-30T17:40:30.947520Z |
| Orbit solution date (soln_date, UTC) |
2025-09-30T14:14:20Z |
| Obs used |
2478 |
| NEO |
Yes |
| M1 |
6.900 |
| K1 |
18.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2020-09-28.0000000 |
| e |
0.92971003 |
| q (au) |
1.172557 |
| a (au) |
16.681714 |
| i (deg) |
44.624832 |
| Ω (om, deg) |
85.862369 |
| ω (w, deg) |
64.528884 |
| M (ma, deg) |
340.156706 |
밝기
산란 + 전체 선형
$$
M_a = (6.109 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.109 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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 |
| 2023-08-13 |
2024-06-30 |
+9.6048 |
-3.068 |
| 2024-06-30 |
2025-07-31 |
-0.6171 |
-1.947 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
19:03:44.60 |
-33:45:41.4 |
HIP 93761 |
23.84 |
| 2026-02-03 12:00 |
19:04:05.39 |
-33:46:19.8 |
HIP 93761 |
19.49 |
| 2026-02-04 00:00 |
19:04:26.09 |
-33:46:58.5 |
HIP 93761 |
15.18 |
| 2026-02-04 12:00 |
19:04:46.73 |
-33:47:37.5 |
HIP 93761 |
10.91 |
| 2026-02-05 00:00 |
19:05:07.28 |
-33:48:16.7 |
HIP 93761 |
6.74 |
| 2026-02-05 12:00 |
19:05:27.75 |
-33:48:56.3 |
HIP 93761 |
3.05 |
| 2026-02-06 00:00 |
19:05:48.14 |
-33:49:36.1 |
HIP 93761 |
3.19 |
| 2026-02-06 12:00 |
19:06:08.45 |
-33:50:16.2 |
HIP 93761 |
6.90 |
| 2026-02-07 00:00 |
19:06:28.67 |
-33:50:56.6 |
HIP 93761 |
11.01 |
| 2026-02-07 12:00 |
19:06:48.81 |
-33:51:37.3 |
HIP 93761 |
15.19 |
| 2026-02-08 00:00 |
19:07:08.87 |
-33:52:18.2 |
HIP 93761 |
19.37 |
| 2026-02-08 12:00 |
19:07:28.84 |
-33:52:59.5 |
HIP 94038 |
16.46 |
| 2026-02-09 00:00 |
19:07:48.73 |
-33:53:41.1 |
HIP 94038 |
12.93 |
| 2026-02-09 12:00 |
19:08:08.53 |
-33:54:23.0 |
HIP 94038 |
9.93 |
| 2026-02-10 00:00 |
19:08:28.24 |
-33:55:05.3 |
HIP 94038 |
8.08 |
| 2026-02-10 12:00 |
19:08:47.86 |
-33:55:47.8 |
HIP 94038 |
8.15 |
| 2026-02-11 00:00 |
19:09:07.40 |
-33:56:30.7 |
HIP 94042 |
10.03 |
| 2026-02-11 12:00 |
19:09:26.84 |
-33:57:13.8 |
HIP 94042 |
12.96 |
| 2026-02-12 00:00 |
19:09:46.19 |
-33:57:57.3 |
HIP 94042 |
16.39 |
| 2026-02-12 12:00 |
19:10:05.45 |
-33:58:41.2 |
HIP 94042 |
20.05 |
| 2026-02-13 00:00 |
19:10:24.62 |
-33:59:25.4 |
HIP 94113 |
22.03 |
| 2026-02-13 12:00 |
19:10:43.69 |
-34:00:09.9 |
HIP 94303 |
21.37 |
| 2026-02-14 00:00 |
19:11:02.67 |
-34:00:54.7 |
HIP 94303 |
20.10 |
| 2026-02-14 12:00 |
19:11:21.55 |
-34:01:39.9 |
HIP 94303 |
19.60 |
| 2026-02-15 00:00 |
19:11:40.34 |
-34:02:25.5 |
HIP 94391 |
17.30 |
| 2026-02-15 12:00 |
19:11:59.03 |
-34:03:11.4 |
HIP 94391 |
15.16 |
| 2026-02-16 00:00 |
19:12:17.62 |
-34:03:57.6 |
HIP 94391 |
13.85 |
| 2026-02-16 12:00 |
19:12:36.11 |
-34:04:44.3 |
HIP 94391 |
13.60 |
| 2026-02-17 00:00 |
19:12:54.50 |
-34:05:31.2 |
HIP 94391 |
14.46 |
| 2026-02-17 12:00 |
19:13:12.80 |
-34:06:18.6 |
HIP 94533 |
14.51 |
| 2026-02-18 00:00 |
19:13:30.98 |
-34:07:06.3 |
HIP 94533 |
10.67 |
| 2026-02-18 12:00 |
19:13:49.07 |
-34:07:54.4 |
HIP 94533 |
6.88 |
| 2026-02-19 00:00 |
19:14:07.05 |
-34:08:42.9 |
HIP 94533 |
3.20 |
| 2026-02-19 12:00 |
19:14:24.93 |
-34:09:31.7 |
HIP 94533 |
1.46 |
| 2026-02-20 00:00 |
19:14:42.70 |
-34:10:21.0 |
HIP 94533 |
4.75 |
| 2026-02-20 12:00 |
19:15:00.37 |
-34:11:10.6 |
HIP 94533 |
8.43 |
| 2026-02-21 00:00 |
19:15:17.93 |
-34:12:00.6 |
HIP 94661 |
6.99 |
| 2026-02-21 12:00 |
19:15:35.38 |
-34:12:51.0 |
HIP 94661 |
3.87 |
| 2026-02-22 00:00 |
19:15:52.73 |
-34:13:41.8 |
HIP 94661 |
2.90 |
| 2026-02-22 12:00 |
19:16:09.96 |
-34:14:33.0 |
HIP 94661 |
5.36 |
| 2026-02-23 00:00 |
19:16:27.08 |
-34:15:24.6 |
HIP 94777 |
8.64 |
| 2026-02-23 12:00 |
19:16:44.10 |
-34:16:16.6 |
HIP 94777 |
6.19 |
| 2026-02-24 00:00 |
19:17:01.00 |
-34:17:09.0 |
HIP 94777 |
5.32 |