메타데이터
| 항목 |
값 |
| Designation |
C/2013 X1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2016-04-20T17:29:19.973760Z |
| Orbit solution date (soln_date, UTC) |
2022-10-25T15:34:16Z |
| Obs used |
539 |
| NEO |
- |
| M1 |
10.700 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2015-12-20.0000000 |
| e |
1.00102603 |
| q (au) |
1.314236 |
| a (au) |
-1280.894658 |
| i (deg) |
163.231932 |
| Ω (om, deg) |
130.954864 |
| ω (w, deg) |
164.460665 |
| M (ma, deg) |
-0.002639 |
밝기
산란 + 전체 선형
$$
M_a = (9.102 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
9.102 |
| n |
2.000 |
| gf |
0.800 |
| gb |
-0.501 |
| k |
1.000 |
| δ90 |
7.925 |
| 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 |
| 2013-10-17 |
2015-12-16 |
-0.6277 |
-0.078 |
| 2015-12-16 |
2016-01-10 |
+25.7189 |
-8.969 |
| 2016-01-10 |
2016-04-20 |
+10.9684 |
-4.036 |
| 2016-04-22 |
2018-01-29 |
+6.2809 |
-3.385 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-03-26 00:00 |
11:10:15.13 |
-07:10:26.7 |
HIP 54582 |
12.90 |
| 2026-03-26 12:00 |
11:10:10.48 |
-07:09:51.8 |
HIP 54582 |
13.50 |
| 2026-03-27 00:00 |
11:10:05.84 |
-07:09:16.9 |
HIP 54582 |
14.18 |
| 2026-03-27 12:00 |
11:10:01.22 |
-07:08:41.9 |
HIP 54582 |
14.95 |
| 2026-03-28 00:00 |
11:09:56.62 |
-07:08:07.0 |
HIP 54582 |
15.79 |
| 2026-03-28 12:00 |
11:09:52.03 |
-07:07:31.9 |
HIP 54582 |
16.68 |
| 2026-03-29 00:00 |
11:09:47.46 |
-07:06:56.9 |
HIP 54582 |
17.62 |
| 2026-03-29 12:00 |
11:09:42.90 |
-07:06:21.8 |
HIP 54582 |
18.59 |
| 2026-03-30 00:00 |
11:09:38.37 |
-07:05:46.7 |
HIP 54582 |
19.60 |
| 2026-03-30 12:00 |
11:09:33.85 |
-07:05:11.6 |
HIP 54582 |
20.64 |
| 2026-03-31 00:00 |
11:09:29.34 |
-07:04:36.4 |
HIP 54582 |
21.70 |
| 2026-03-31 12:00 |
11:09:24.86 |
-07:04:01.3 |
HIP 54582 |
22.77 |
| 2026-04-01 00:00 |
11:09:20.39 |
-07:03:26.1 |
HIP 54582 |
23.87 |
| 2026-04-01 12:00 |
11:09:15.94 |
-07:02:50.9 |
HIP 54582 |
24.97 |
| 2026-04-02 00:00 |
11:09:11.51 |
-07:02:15.7 |
HIP 54582 |
26.09 |
| 2026-04-02 12:00 |
11:09:07.11 |
-07:01:40.5 |
HIP 54589 |
26.97 |
| 2026-04-03 00:00 |
11:09:02.71 |
-07:01:05.3 |
HIP 54589 |
27.27 |
| 2026-04-03 12:00 |
11:08:58.34 |
-07:00:30.1 |
HIP 54589 |
27.62 |
| 2026-04-04 00:00 |
11:08:53.99 |
-06:59:54.9 |
HIP 54589 |
28.01 |
| 2026-04-04 12:00 |
11:08:49.66 |
-06:59:19.7 |
HIP 54589 |
28.45 |
| 2026-04-05 00:00 |
11:08:45.36 |
-06:58:44.5 |
HIP 54589 |
28.93 |
| 2026-04-05 12:00 |
11:08:41.07 |
-06:58:09.3 |
HIP 54589 |
29.45 |
| 2026-04-06 00:00 |
11:08:36.80 |
-06:57:34.1 |
HIP 54589 |
30.00 |
| 2026-04-06 12:00 |
11:08:32.56 |
-06:56:58.9 |
HIP 54589 |
30.59 |
| 2026-04-07 00:00 |
11:08:28.33 |
-06:56:23.8 |
HIP 54589 |
31.21 |
| 2026-04-07 12:00 |
11:08:24.13 |
-06:55:48.6 |
HIP 54458 |
30.81 |
| 2026-04-08 00:00 |
11:08:19.95 |
-06:55:13.5 |
HIP 54458 |
30.31 |
| 2026-04-08 12:00 |
11:08:15.80 |
-06:54:38.5 |
HIP 54458 |
29.84 |
| 2026-04-09 00:00 |
11:08:11.67 |
-06:54:03.4 |
HIP 54458 |
29.42 |
| 2026-04-09 12:00 |
11:08:07.56 |
-06:53:28.4 |
HIP 54458 |
29.04 |
| 2026-04-10 00:00 |
11:08:03.47 |
-06:52:53.4 |
HIP 54458 |
28.69 |
| 2026-04-10 12:00 |
11:07:59.41 |
-06:52:18.4 |
HIP 54458 |
28.40 |
| 2026-04-11 00:00 |
11:07:55.38 |
-06:51:43.5 |
HIP 54458 |
28.14 |
| 2026-04-11 12:00 |
11:07:51.36 |
-06:51:08.6 |
HIP 54265 |
27.81 |
| 2026-04-12 00:00 |
11:07:47.38 |
-06:50:33.8 |
HIP 54265 |
27.09 |
| 2026-04-12 12:00 |
11:07:43.42 |
-06:49:59.0 |
HIP 54265 |
26.41 |
| 2026-04-13 00:00 |
11:07:39.48 |
-06:49:24.3 |
HIP 54265 |
25.76 |
| 2026-04-13 12:00 |
11:07:35.57 |
-06:48:49.6 |
HIP 54265 |
25.15 |
| 2026-04-14 00:00 |
11:07:31.69 |
-06:48:14.9 |
HIP 54265 |
24.58 |
| 2026-04-14 12:00 |
11:07:27.83 |
-06:47:40.3 |
HIP 54265 |
24.06 |
| 2026-04-15 00:00 |
11:07:24.00 |
-06:47:05.8 |
HIP 54265 |
23.58 |
| 2026-04-15 12:00 |
11:07:20.19 |
-06:46:31.4 |
HIP 54265 |
23.15 |
| 2026-04-16 00:00 |
11:07:16.42 |
-06:45:57.0 |
HIP 54265 |
22.77 |