메타데이터
| 항목 |
값 |
| Designation |
C/2015 V1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2017-12-17T19:17:15.800640Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:33:16Z |
| Obs used |
2145 |
| NEO |
- |
| M1 |
8.300 |
| K1 |
8.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2017-06-28.0000000 |
| e |
1.00055464 |
| q (au) |
4.266704 |
| a (au) |
-7692.742203 |
| i (deg) |
139.230487 |
| Ω (om, deg) |
197.193756 |
| ω (w, deg) |
179.649665 |
| M (ma, deg) |
-0.000252 |
밝기
산란 + 전체 선형
$$
M_a = (10.400 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
10.400 |
| n |
2.000 |
| gf |
0.821 |
| gb |
-0.500 |
| k |
0.901 |
| δ90 |
1.000 |
| 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 |
| 2015-11-02 |
2016-09-21 |
+10.7844 |
-8.539 |
| 2016-09-21 |
2017-03-03 |
+2.3776 |
-2.080 |
| 2017-03-03 |
2017-12-17 |
-9.8282 |
+6.267 |
| 2017-12-17 |
2019-06-11 |
+7.0878 |
-4.329 |
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 |
15:29:33.29 |
-54:19:22.6 |
HIP 75639 |
24.27 |
| 2026-06-01 12:00 |
15:29:22.38 |
-54:18:41.1 |
HIP 75639 |
22.56 |
| 2026-06-02 00:00 |
15:29:11.50 |
-54:17:59.2 |
HIP 75639 |
20.85 |
| 2026-06-02 12:00 |
15:29:00.66 |
-54:17:16.8 |
HIP 75639 |
19.15 |
| 2026-06-03 00:00 |
15:28:49.85 |
-54:16:34.0 |
HIP 75639 |
17.45 |
| 2026-06-03 12:00 |
15:28:39.08 |
-54:15:50.8 |
HIP 75639 |
15.76 |
| 2026-06-04 00:00 |
15:28:28.34 |
-54:15:07.1 |
HIP 75639 |
14.07 |
| 2026-06-04 12:00 |
15:28:17.64 |
-54:14:23.1 |
HIP 75639 |
12.40 |
| 2026-06-05 00:00 |
15:28:06.98 |
-54:13:38.6 |
HIP 75639 |
10.75 |
| 2026-06-05 12:00 |
15:27:56.36 |
-54:12:53.7 |
HIP 75639 |
9.12 |
| 2026-06-06 00:00 |
15:27:45.77 |
-54:12:08.4 |
HIP 75639 |
7.54 |
| 2026-06-06 12:00 |
15:27:35.23 |
-54:11:22.6 |
HIP 75639 |
6.02 |
| 2026-06-07 00:00 |
15:27:24.73 |
-54:10:36.5 |
HIP 75639 |
4.65 |
| 2026-06-07 12:00 |
15:27:14.27 |
-54:09:50.0 |
HIP 75639 |
3.59 |
| 2026-06-08 00:00 |
15:27:03.85 |
-54:09:03.1 |
HIP 75639 |
3.15 |
| 2026-06-08 12:00 |
15:26:53.48 |
-54:08:15.8 |
HIP 75639 |
3.58 |
| 2026-06-09 00:00 |
15:26:43.15 |
-54:07:28.1 |
HIP 75639 |
4.64 |
| 2026-06-09 12:00 |
15:26:32.86 |
-54:06:40.0 |
HIP 75639 |
6.00 |
| 2026-06-10 00:00 |
15:26:22.62 |
-54:05:51.5 |
HIP 75639 |
7.49 |
| 2026-06-10 12:00 |
15:26:12.43 |
-54:05:02.7 |
HIP 75639 |
9.06 |
| 2026-06-11 00:00 |
15:26:02.29 |
-54:04:13.5 |
HIP 75639 |
10.66 |
| 2026-06-11 12:00 |
15:25:52.19 |
-54:03:23.9 |
HIP 75639 |
12.29 |
| 2026-06-12 00:00 |
15:25:42.14 |
-54:02:34.0 |
HIP 75639 |
13.92 |
| 2026-06-12 12:00 |
15:25:32.14 |
-54:01:43.7 |
HIP 75639 |
15.57 |
| 2026-06-13 00:00 |
15:25:22.19 |
-54:00:53.1 |
HIP 75639 |
17.22 |
| 2026-06-13 12:00 |
15:25:12.30 |
-54:00:02.0 |
HIP 75639 |
18.87 |
| 2026-06-14 00:00 |
15:25:02.45 |
-53:59:10.7 |
HIP 75639 |
20.52 |
| 2026-06-14 12:00 |
15:24:52.66 |
-53:58:19.0 |
HIP 75639 |
22.17 |
| 2026-06-15 00:00 |
15:24:42.92 |
-53:57:27.0 |
HIP 75639 |
23.82 |
| 2026-06-15 12:00 |
15:24:33.23 |
-53:56:34.6 |
HIP 75639 |
25.47 |
| 2026-06-16 00:00 |
15:24:23.60 |
-53:55:41.9 |
HIP 75534 |
26.96 |
| 2026-06-16 12:00 |
15:24:14.03 |
-53:54:48.9 |
HIP 75220 |
25.66 |
| 2026-06-17 00:00 |
15:24:04.51 |
-53:53:55.6 |
HIP 75220 |
24.05 |
| 2026-06-17 12:00 |
15:23:55.05 |
-53:53:02.0 |
HIP 75220 |
22.45 |
| 2026-06-18 00:00 |
15:23:45.65 |
-53:52:08.0 |
HIP 75220 |
20.86 |
| 2026-06-18 12:00 |
15:23:36.30 |
-53:51:13.8 |
HIP 75220 |
19.28 |
| 2026-06-19 00:00 |
15:23:27.02 |
-53:50:19.2 |
HIP 75220 |
17.72 |
| 2026-06-19 12:00 |
15:23:17.79 |
-53:49:24.4 |
HIP 75220 |
16.17 |
| 2026-06-20 00:00 |
15:23:08.62 |
-53:48:29.3 |
HIP 75220 |
14.65 |
| 2026-06-20 12:00 |
15:22:59.52 |
-53:47:33.8 |
HIP 75220 |
13.15 |
| 2026-06-21 00:00 |
15:22:50.47 |
-53:46:38.2 |
HIP 75220 |
11.69 |
| 2026-06-21 12:00 |
15:22:41.49 |
-53:45:42.2 |
HIP 75220 |
10.28 |
| 2026-06-22 00:00 |
15:22:32.57 |
-53:44:46.0 |
HIP 75220 |
8.93 |