1999 SD20

1999SD20, 1998 HL140, 1998HL140, 40736, J98HE0L, J99S20D

All data for this body: [vot]

MPC data
Name (number) 1999 SD20 (40736)
a 2.58412
e 0.18776
i / sin(i) 14.6341 / 0.25265
q 2.09893
Q 3.06930
ω 252.2211
Node 57.2511
m 318.5216
n 0.2373
Epoch 2460200.5
nobs 1769
nopp 21
Years observed 1994-2023
rms 0.66
Best values
[raw, vot]

Value Standard error
Parent Eunomia (15)
 
ap 2.585
ep 0.145
sin(ip) 0.244
Value Standard error
G 0.150
H 14.530
Mass
D 6.34 0.114
pV 0.110 0.0079
Rotational Period
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
15 Eunomia 502 Eunomia -0.4500 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.5848 0.1450 0.2440 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Oct-2022
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
2.17 2.030 2.030 Nugent 2016AJ....152...63N NEATM
6.35 0.114 0.114 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.110 0.0079 0.0079 Masiero 2011ApJ...741...68M NEATM
0.540 0.2600 0.2600 Nugent 2016AJ....152...63N NEATM
G data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.15 MPC-2023-12-94 MPC-2023-12-94 Phot
H data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
14.53 MPC-2023-12-04 MPC-2023-12-04 Phot