메타데이터
| 항목 |
값 |
| Designation |
C/2015 D5 (Kowalski) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-04-17T01:46:07.006080Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:33:07Z |
| Obs used |
114 |
| NEO |
- |
| M1 |
13.400 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-03-06.0000000 |
| e |
0.49964849 |
| q (au) |
4.577343 |
| a (au) |
9.148254 |
| i (deg) |
20.399803 |
| Ω (om, deg) |
74.578267 |
| ω (w, deg) |
40.175332 |
| M (ma, deg) |
11.502709 |
밝기
산란 + 전체 선형
$$
M_a = (12.402 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
12.402 |
| n |
2.000 |
| gf |
0.997 |
| gb |
-1.000 |
| k |
1.000 |
| δ90 |
9.999 |
| 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 |
19:26:38.93 |
-33:50:55.3 |
HIP 95553 |
14.34 |
| 2026-06-01 12:00 |
19:26:32.61 |
-33:51:33.4 |
HIP 95553 |
13.20 |
| 2026-06-02 00:00 |
19:26:26.23 |
-33:52:11.4 |
HIP 95553 |
12.12 |
| 2026-06-02 12:00 |
19:26:19.78 |
-33:52:49.3 |
HIP 95553 |
11.14 |
| 2026-06-03 00:00 |
19:26:13.27 |
-33:53:27.1 |
HIP 95553 |
10.27 |
| 2026-06-03 12:00 |
19:26:06.70 |
-33:54:04.9 |
HIP 95553 |
9.56 |
| 2026-06-04 00:00 |
19:26:00.05 |
-33:54:42.5 |
HIP 95553 |
9.04 |
| 2026-06-04 12:00 |
19:25:53.35 |
-33:55:20.1 |
HIP 95553 |
8.77 |
| 2026-06-05 00:00 |
19:25:46.58 |
-33:55:57.6 |
HIP 95553 |
8.76 |
| 2026-06-05 12:00 |
19:25:39.75 |
-33:56:35.0 |
HIP 95553 |
9.03 |
| 2026-06-06 00:00 |
19:25:32.86 |
-33:57:12.3 |
HIP 95553 |
9.56 |
| 2026-06-06 12:00 |
19:25:25.91 |
-33:57:49.5 |
HIP 95553 |
10.31 |
| 2026-06-07 00:00 |
19:25:18.90 |
-33:58:26.6 |
HIP 95553 |
11.24 |
| 2026-06-07 12:00 |
19:25:11.83 |
-33:59:03.5 |
HIP 95553 |
12.31 |
| 2026-06-08 00:00 |
19:25:04.70 |
-33:59:40.4 |
HIP 95553 |
13.50 |
| 2026-06-08 12:00 |
19:24:57.51 |
-34:00:17.1 |
HIP 95553 |
14.78 |
| 2026-06-09 00:00 |
19:24:50.26 |
-34:00:53.7 |
HIP 95553 |
16.13 |
| 2026-06-09 12:00 |
19:24:42.96 |
-34:01:30.2 |
HIP 95553 |
17.54 |
| 2026-06-10 00:00 |
19:24:35.60 |
-34:02:06.6 |
HIP 95553 |
18.99 |
| 2026-06-10 12:00 |
19:24:28.19 |
-34:02:42.8 |
HIP 95553 |
20.49 |
| 2026-06-11 00:00 |
19:24:20.72 |
-34:03:18.9 |
HIP 95553 |
22.01 |
| 2026-06-11 12:00 |
19:24:13.19 |
-34:03:54.9 |
HIP 95553 |
23.57 |
| 2026-06-12 00:00 |
19:24:05.61 |
-34:04:30.7 |
HIP 95553 |
25.15 |
| 2026-06-12 12:00 |
19:23:57.98 |
-34:05:06.4 |
HIP 95553 |
26.76 |
| 2026-06-13 00:00 |
19:23:50.30 |
-34:05:41.9 |
HIP 95313 |
26.25 |
| 2026-06-13 12:00 |
19:23:42.57 |
-34:06:17.2 |
HIP 95313 |
25.46 |
| 2026-06-14 00:00 |
19:23:34.79 |
-34:06:52.5 |
HIP 95313 |
24.75 |
| 2026-06-14 12:00 |
19:23:26.96 |
-34:07:27.5 |
HIP 95313 |
24.15 |
| 2026-06-15 00:00 |
19:23:19.08 |
-34:08:02.4 |
HIP 95313 |
23.67 |
| 2026-06-15 12:00 |
19:23:11.15 |
-34:08:37.1 |
HIP 95313 |
23.30 |
| 2026-06-16 00:00 |
19:23:03.17 |
-34:09:11.6 |
HIP 95313 |
23.07 |
| 2026-06-16 12:00 |
19:22:55.16 |
-34:09:46.0 |
HIP 95313 |
22.97 |
| 2026-06-17 00:00 |
19:22:47.09 |
-34:10:20.2 |
HIP 95313 |
23.02 |
| 2026-06-17 12:00 |
19:22:38.98 |
-34:10:54.2 |
HIP 95313 |
23.20 |
| 2026-06-18 00:00 |
19:22:30.83 |
-34:11:28.0 |
HIP 95313 |
23.52 |
| 2026-06-18 12:00 |
19:22:22.64 |
-34:12:01.7 |
HIP 95313 |
23.98 |
| 2026-06-19 00:00 |
19:22:14.40 |
-34:12:35.1 |
HIP 95043 |
24.07 |
| 2026-06-19 12:00 |
19:22:06.13 |
-34:13:08.3 |
HIP 95043 |
22.29 |
| 2026-06-20 00:00 |
19:21:57.81 |
-34:13:41.4 |
HIP 95043 |
20.52 |
| 2026-06-20 12:00 |
19:21:49.46 |
-34:14:14.2 |
HIP 95043 |
18.74 |
| 2026-06-21 00:00 |
19:21:41.07 |
-34:14:46.9 |
HIP 95043 |
16.96 |
| 2026-06-21 12:00 |
19:21:32.64 |
-34:15:19.3 |
HIP 95043 |
15.19 |
| 2026-06-22 00:00 |
19:21:24.18 |
-34:15:51.5 |
HIP 95043 |
13.42 |