1999 NP4

1999NP4, 1996 VH31, 1996VH31, 38210, J96V31H, J99N04P

All data for this body: [vot]

MPC data
Name (number) 1999 NP4 (38210)
a 2.47223
e 0.09226
i / sin(i) 7.9268 / 0.13791
q 2.24413
Q 2.70033
ω 153.5571
Node 109.3906
m 258.8713
n 0.2536
Epoch 2460800.5
nobs 1534
nopp 21
Years observed 1996-2025
rms 0.80
Best values
[raw, vot]

Value Standard error
Parent
 
ap 2.471
ep 0.102
sin(ip) 0.122
G 0.150
H 15.380
Mass
D 1.96 0.531
pV 0.419 0.2210
Value
Rotational Period
Period quality None
Spectral Class None
Spectral Class Score
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.4715 0.1016 0.1225 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
Diameter data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
1.96 0.531 0.531 Masiero 2011ApJ...741...68M NEATM
Albedo data
[raw, vot]

Value Uncertainty up Uncertainty down Author Reference Method
0.419 0.2210 0.2210 Masiero 2011ApJ...741...68M 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
15.38 MPC-2023-12-04 MPC-2023-12-04 Phot