메타데이터
| 항목 |
값 |
| Designation |
113P/Spitaler |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2015-04-23T18:19:34.599360Z |
| Orbit solution date (soln_date, UTC) |
2024-04-29T13:12:26Z |
| Obs used |
879 |
| NEO |
- |
| M1 |
14.700 |
| K1 |
8.000 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-07-26.0000000 |
| e |
0.42451621 |
| q (au) |
2.118865 |
| a (au) |
3.681885 |
| i (deg) |
5.776267 |
| Ω (om, deg) |
14.385093 |
| ω (w, deg) |
50.026650 |
| M (ma, deg) |
13.007213 |
밝기
산란 + 전체 선형
$$
M_a = (10.379 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.379 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.854 |
| k |
0.999 |
| 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 |
| 2021-06-18 |
2022-06-01 |
+1.1076 |
-0.529 |
| 2022-06-01 |
2023-04-15 |
+5.3352 |
-1.919 |
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 |
16:44:41.28 |
-27:40:08.8 |
HIP 81981 |
12.92 |
| 2026-06-01 12:00 |
16:44:20.81 |
-27:39:28.0 |
HIP 81939 |
12.12 |
| 2026-06-02 00:00 |
16:44:00.33 |
-27:38:46.7 |
HIP 81939 |
12.02 |
| 2026-06-02 12:00 |
16:43:39.83 |
-27:38:04.9 |
HIP 81939 |
13.57 |
| 2026-06-03 00:00 |
16:43:19.33 |
-27:37:22.5 |
HIP 81939 |
16.30 |
| 2026-06-03 12:00 |
16:42:58.83 |
-27:36:39.6 |
HIP 81939 |
19.74 |
| 2026-06-04 00:00 |
16:42:38.32 |
-27:35:56.1 |
HIP 81731 |
18.46 |
| 2026-06-04 12:00 |
16:42:17.82 |
-27:35:12.2 |
HIP 81731 |
16.07 |
| 2026-06-05 00:00 |
16:41:57.33 |
-27:34:27.7 |
HIP 81731 |
14.78 |
| 2026-06-05 12:00 |
16:41:36.85 |
-27:33:42.7 |
HIP 81731 |
14.86 |
| 2026-06-06 00:00 |
16:41:16.38 |
-27:32:57.2 |
HIP 81731 |
16.31 |
| 2026-06-06 12:00 |
16:40:55.92 |
-27:32:11.3 |
HIP 81731 |
18.80 |
| 2026-06-07 00:00 |
16:40:35.49 |
-27:31:24.8 |
HIP 81566 |
20.13 |
| 2026-06-07 12:00 |
16:40:15.08 |
-27:30:37.9 |
HIP 81566 |
16.60 |
| 2026-06-08 00:00 |
16:39:54.70 |
-27:29:50.4 |
HIP 81566 |
13.70 |
| 2026-06-08 12:00 |
16:39:34.34 |
-27:29:02.6 |
HIP 81566 |
11.92 |
| 2026-06-09 00:00 |
16:39:14.02 |
-27:28:14.2 |
HIP 81566 |
11.77 |
| 2026-06-09 12:00 |
16:38:53.74 |
-27:27:25.4 |
HIP 81566 |
13.28 |
| 2026-06-10 00:00 |
16:38:33.49 |
-27:26:36.2 |
HIP 81566 |
16.00 |
| 2026-06-10 12:00 |
16:38:13.29 |
-27:25:46.6 |
HIP 81566 |
19.41 |
| 2026-06-11 00:00 |
16:37:53.14 |
-27:24:56.5 |
HIP 81566 |
23.21 |
| 2026-06-11 12:00 |
16:37:33.03 |
-27:24:06.0 |
HIP 81456 |
23.74 |
| 2026-06-12 00:00 |
16:37:12.98 |
-27:23:15.1 |
HIP 81456 |
25.07 |
| 2026-06-12 12:00 |
16:36:52.98 |
-27:22:23.8 |
HIP 81184 |
26.17 |
| 2026-06-13 00:00 |
16:36:33.04 |
-27:21:32.1 |
HIP 81184 |
21.68 |
| 2026-06-13 12:00 |
16:36:13.17 |
-27:20:40.0 |
HIP 81184 |
17.21 |
| 2026-06-14 00:00 |
16:35:53.36 |
-27:19:47.5 |
HIP 81184 |
12.78 |
| 2026-06-14 12:00 |
16:35:33.62 |
-27:18:54.7 |
HIP 81184 |
8.41 |
| 2026-06-15 00:00 |
16:35:13.96 |
-27:18:01.6 |
HIP 81184 |
4.28 |
| 2026-06-15 12:00 |
16:34:54.37 |
-27:17:08.1 |
HIP 81184 |
2.38 |
| 2026-06-16 00:00 |
16:34:34.86 |
-27:16:14.3 |
HIP 81184 |
5.68 |
| 2026-06-16 12:00 |
16:34:15.44 |
-27:15:20.1 |
HIP 81184 |
9.89 |
| 2026-06-17 00:00 |
16:33:56.10 |
-27:14:25.7 |
HIP 81070 |
10.01 |
| 2026-06-17 12:00 |
16:33:36.85 |
-27:13:30.9 |
HIP 81070 |
7.57 |
| 2026-06-18 00:00 |
16:33:17.69 |
-27:12:35.9 |
HIP 81070 |
7.24 |
| 2026-06-18 12:00 |
16:32:58.63 |
-27:11:40.5 |
HIP 81070 |
9.24 |
| 2026-06-19 00:00 |
16:32:39.67 |
-27:10:45.0 |
HIP 81070 |
12.46 |
| 2026-06-19 12:00 |
16:32:20.80 |
-27:09:49.1 |
HIP 81070 |
16.18 |
| 2026-06-20 00:00 |
16:32:02.05 |
-27:08:53.0 |
HIP 80846 |
19.44 |
| 2026-06-20 12:00 |
16:31:43.40 |
-27:07:56.7 |
HIP 80846 |
15.45 |
| 2026-06-21 00:00 |
16:31:24.86 |
-27:07:00.1 |
HIP 80846 |
11.66 |
| 2026-06-21 12:00 |
16:31:06.43 |
-27:06:03.4 |
HIP 80846 |
8.34 |
| 2026-06-22 00:00 |
16:30:48.12 |
-27:05:06.4 |
HIP 80846 |
6.21 |