메타데이터
| 항목 |
값 |
| Designation |
C/2012 K1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-08-27T15:50:55.363200Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:09Z |
| Obs used |
7829 |
| NEO |
- |
| M1 |
7.300 |
| K1 |
6.750 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2014-02-09.0000000 |
| e |
1.00015292 |
| q (au) |
1.054597 |
| a (au) |
-6896.600671 |
| i (deg) |
142.428258 |
| Ω (om, deg) |
317.737649 |
| ω (w, deg) |
203.106601 |
| M (ma, deg) |
-0.000344 |
밝기
산란 + 전체 선형
$$
M_a = (11.414 + 2.385\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.414 |
| n |
2.385 |
| gf |
1.000 |
| gb |
-0.794 |
| k |
0.800 |
| 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 |
| 2012-05-14 |
2014-07-17 |
+1.6909 |
-1.293 |
| 2014-08-31 |
2014-10-31 |
+17.6020 |
-4.109 |
| 2014-10-31 |
2016-08-07 |
+3.7225 |
-1.211 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
21:19:20.58 |
-15:04:16.6 |
HIP 105285 |
3.96 |
| 2026-07-29 12:00 |
21:19:16.23 |
-15:04:34.4 |
HIP 105285 |
4.61 |
| 2026-07-30 00:00 |
21:19:11.87 |
-15:04:52.3 |
HIP 105285 |
5.40 |
| 2026-07-30 12:00 |
21:19:07.51 |
-15:05:10.2 |
HIP 105285 |
6.29 |
| 2026-07-31 00:00 |
21:19:03.14 |
-15:05:28.2 |
HIP 105285 |
7.24 |
| 2026-07-31 12:00 |
21:18:58.76 |
-15:05:46.1 |
HIP 105285 |
8.22 |
| 2026-08-01 00:00 |
21:18:54.38 |
-15:06:04.1 |
HIP 105285 |
9.23 |
| 2026-08-01 12:00 |
21:18:49.99 |
-15:06:22.1 |
HIP 105285 |
10.26 |
| 2026-08-02 00:00 |
21:18:45.60 |
-15:06:40.2 |
HIP 105285 |
11.31 |
| 2026-08-02 12:00 |
21:18:41.20 |
-15:06:58.2 |
HIP 105285 |
12.36 |
| 2026-08-03 00:00 |
21:18:36.80 |
-15:07:16.3 |
HIP 105285 |
13.43 |
| 2026-08-03 12:00 |
21:18:32.40 |
-15:07:34.4 |
HIP 105285 |
14.50 |
| 2026-08-04 00:00 |
21:18:27.99 |
-15:07:52.5 |
HIP 105285 |
15.57 |
| 2026-08-04 12:00 |
21:18:23.57 |
-15:08:10.7 |
HIP 105285 |
16.66 |
| 2026-08-05 00:00 |
21:18:19.15 |
-15:08:28.8 |
HIP 105285 |
17.74 |
| 2026-08-05 12:00 |
21:18:14.73 |
-15:08:47.0 |
HIP 105285 |
18.83 |
| 2026-08-06 00:00 |
21:18:10.31 |
-15:09:05.1 |
HIP 105285 |
19.92 |
| 2026-08-06 12:00 |
21:18:05.89 |
-15:09:23.3 |
HIP 105285 |
21.02 |
| 2026-08-07 00:00 |
21:18:01.46 |
-15:09:41.5 |
HIP 105285 |
22.11 |
| 2026-08-07 12:00 |
21:17:57.03 |
-15:09:59.7 |
HIP 105285 |
23.21 |
| 2026-08-08 00:00 |
21:17:52.60 |
-15:10:17.9 |
HIP 105285 |
24.31 |
| 2026-08-08 12:00 |
21:17:48.17 |
-15:10:36.1 |
HIP 105285 |
25.41 |
| 2026-08-09 00:00 |
21:17:43.74 |
-15:10:54.3 |
HIP 105285 |
26.51 |
| 2026-08-09 12:00 |
21:17:39.31 |
-15:11:12.5 |
HIP 105042 |
26.65 |
| 2026-08-10 00:00 |
21:17:34.88 |
-15:11:30.7 |
HIP 105042 |
26.31 |
| 2026-08-10 12:00 |
21:17:30.45 |
-15:11:48.9 |
HIP 104974 |
25.53 |
| 2026-08-11 00:00 |
21:17:26.02 |
-15:12:07.1 |
HIP 104974 |
24.48 |
| 2026-08-11 12:00 |
21:17:21.59 |
-15:12:25.3 |
HIP 104974 |
23.44 |
| 2026-08-12 00:00 |
21:17:17.16 |
-15:12:43.5 |
HIP 104974 |
22.41 |
| 2026-08-12 12:00 |
21:17:12.74 |
-15:13:01.7 |
HIP 104974 |
21.38 |
| 2026-08-13 00:00 |
21:17:08.31 |
-15:13:19.9 |
HIP 104974 |
20.37 |
| 2026-08-13 12:00 |
21:17:03.89 |
-15:13:38.0 |
HIP 104974 |
19.37 |
| 2026-08-14 00:00 |
21:16:59.47 |
-15:13:56.2 |
HIP 104974 |
18.37 |
| 2026-08-14 12:00 |
21:16:55.06 |
-15:14:14.3 |
HIP 104974 |
17.40 |
| 2026-08-15 00:00 |
21:16:50.65 |
-15:14:32.4 |
HIP 104974 |
16.44 |
| 2026-08-15 12:00 |
21:16:46.24 |
-15:14:50.5 |
HIP 104974 |
15.50 |
| 2026-08-16 00:00 |
21:16:41.84 |
-15:15:08.6 |
HIP 104974 |
14.58 |
| 2026-08-16 12:00 |
21:16:37.44 |
-15:15:26.6 |
HIP 104974 |
13.70 |
| 2026-08-17 00:00 |
21:16:33.05 |
-15:15:44.6 |
HIP 104974 |
12.85 |
| 2026-08-17 12:00 |
21:16:28.67 |
-15:16:02.6 |
HIP 104974 |
12.04 |
| 2026-08-18 00:00 |
21:16:24.28 |
-15:16:20.6 |
HIP 104974 |
11.28 |
| 2026-08-18 12:00 |
21:16:19.91 |
-15:16:38.5 |
HIP 104974 |
10.58 |
| 2026-08-19 00:00 |
21:16:15.54 |
-15:16:56.4 |
HIP 104974 |
9.96 |