메타데이터
| 항목 |
값 |
| Designation |
C/1970 N1 (Abe) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1970-10-20T16:46:43.086720Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:19Z |
| Obs used |
271 |
| NEO |
- |
| M1 |
6.600 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
1970-10-11.0000000 |
| e |
1.00003692 |
| q (au) |
1.112541 |
| a (au) |
-30136.217151 |
| i (deg) |
126.719910 |
| Ω (om, deg) |
21.701358 |
| ω (w, deg) |
96.583364 |
| M (ma, deg) |
-0.000002 |
밝기
산란 + 전체 선형
$$
M_a = (5.447 + 3.246\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
5.447 |
| n |
3.246 |
| gf |
0.800 |
| gb |
-0.948 |
| k |
0.999 |
| 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 |
| 1970-07-05 |
1970-10-20 |
+1.2370 |
-0.055 |
| 1970-10-20 |
1971-03-07 |
-0.0609 |
-0.277 |
| 1971-03-07 |
1971-05-25 |
+5.0362 |
-1.623 |
log10 r = log10(태양거리/AU), Δ = 지구거리(AU)
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
07:29:02.32 |
-31:32:21.8 |
HIP 36362 |
5.02 |
| 2026-05-12 12:00 |
07:29:03.12 |
-31:32:07.6 |
HIP 36362 |
4.77 |
| 2026-05-13 00:00 |
07:29:03.94 |
-31:31:53.5 |
HIP 36362 |
4.52 |
| 2026-05-13 12:00 |
07:29:04.77 |
-31:31:39.5 |
HIP 36362 |
4.28 |
| 2026-05-14 00:00 |
07:29:05.62 |
-31:31:25.6 |
HIP 36362 |
4.06 |
| 2026-05-14 12:00 |
07:29:06.47 |
-31:31:11.8 |
HIP 36362 |
3.84 |
| 2026-05-15 00:00 |
07:29:07.34 |
-31:30:58.0 |
HIP 36362 |
3.63 |
| 2026-05-15 12:00 |
07:29:08.22 |
-31:30:44.4 |
HIP 36362 |
3.44 |
| 2026-05-16 00:00 |
07:29:09.11 |
-31:30:30.9 |
HIP 36362 |
3.27 |
| 2026-05-16 12:00 |
07:29:10.01 |
-31:30:17.5 |
HIP 36362 |
3.11 |
| 2026-05-17 00:00 |
07:29:10.93 |
-31:30:04.2 |
HIP 36362 |
2.98 |
| 2026-05-17 12:00 |
07:29:11.85 |
-31:29:50.9 |
HIP 36362 |
2.88 |
| 2026-05-18 00:00 |
07:29:12.79 |
-31:29:37.8 |
HIP 36362 |
2.81 |
| 2026-05-18 12:00 |
07:29:13.74 |
-31:29:24.8 |
HIP 36362 |
2.77 |
| 2026-05-19 00:00 |
07:29:14.70 |
-31:29:11.9 |
HIP 36362 |
2.77 |
| 2026-05-19 12:00 |
07:29:15.67 |
-31:28:59.1 |
HIP 36362 |
2.80 |
| 2026-05-20 00:00 |
07:29:16.65 |
-31:28:46.4 |
HIP 36362 |
2.87 |
| 2026-05-20 12:00 |
07:29:17.65 |
-31:28:33.8 |
HIP 36362 |
2.96 |
| 2026-05-21 00:00 |
07:29:18.65 |
-31:28:21.3 |
HIP 36362 |
3.09 |
| 2026-05-21 12:00 |
07:29:19.67 |
-31:28:08.9 |
HIP 36362 |
3.24 |
| 2026-05-22 00:00 |
07:29:20.69 |
-31:27:56.6 |
HIP 36362 |
3.41 |
| 2026-05-22 12:00 |
07:29:21.73 |
-31:27:44.5 |
HIP 36362 |
3.60 |
| 2026-05-23 00:00 |
07:29:22.78 |
-31:27:32.4 |
HIP 36362 |
3.81 |
| 2026-05-23 12:00 |
07:29:23.83 |
-31:27:20.5 |
HIP 36362 |
4.03 |
| 2026-05-24 00:00 |
07:29:24.90 |
-31:27:08.6 |
HIP 36362 |
4.27 |
| 2026-05-24 12:00 |
07:29:25.98 |
-31:26:56.9 |
HIP 36362 |
4.51 |
| 2026-05-25 00:00 |
07:29:27.07 |
-31:26:45.3 |
HIP 36362 |
4.76 |
| 2026-05-25 12:00 |
07:29:28.17 |
-31:26:33.8 |
HIP 36362 |
5.02 |
| 2026-05-26 00:00 |
07:29:29.27 |
-31:26:22.4 |
HIP 36362 |
5.29 |
| 2026-05-26 12:00 |
07:29:30.39 |
-31:26:11.2 |
HIP 36362 |
5.56 |
| 2026-05-27 00:00 |
07:29:31.52 |
-31:26:00.0 |
HIP 36362 |
5.84 |
| 2026-05-27 12:00 |
07:29:32.66 |
-31:25:49.0 |
HIP 36362 |
6.12 |
| 2026-05-28 00:00 |
07:29:33.81 |
-31:25:38.1 |
HIP 36362 |
6.40 |
| 2026-05-28 12:00 |
07:29:34.96 |
-31:25:27.3 |
HIP 36362 |
6.69 |
| 2026-05-29 00:00 |
07:29:36.13 |
-31:25:16.6 |
HIP 36362 |
6.98 |
| 2026-05-29 12:00 |
07:29:37.31 |
-31:25:06.1 |
HIP 36362 |
7.27 |
| 2026-05-30 00:00 |
07:29:38.49 |
-31:24:55.6 |
HIP 36362 |
7.57 |
| 2026-05-30 12:00 |
07:29:39.69 |
-31:24:45.3 |
HIP 36362 |
7.86 |
| 2026-05-31 00:00 |
07:29:40.89 |
-31:24:35.1 |
HIP 36362 |
8.16 |
| 2026-05-31 12:00 |
07:29:42.10 |
-31:24:25.0 |
HIP 36362 |
8.46 |
| 2026-06-01 00:00 |
07:29:43.33 |
-31:24:15.1 |
HIP 36362 |
8.77 |
| 2026-06-01 12:00 |
07:29:44.56 |
-31:24:05.2 |
HIP 36362 |
9.07 |
| 2026-06-02 00:00 |
07:29:45.80 |
-31:23:55.5 |
HIP 36362 |
9.38 |