1987 RA1

1987RA1, 05428, 1976 JS4, 1976JS4, 1990 DV2, 1990DV2, J76J04S, J87R01A, J90D02V

All data for this body: [vot]

MPC data
Name (number) 1987 RA1 (5428)
a 2.90207
e 0.04015
i / sin(i) 0.9365 / 0.01634
q 2.78555
Q 3.01860
ω 16.9390
Node 269.1362
m 268.6161
n 0.1994
Epoch 2460800.5
nobs 3696
nopp 30
Years observed 1954-2025
rms 0.67
Best values
[raw, vot]

Value Standard error
Parent Koronis (158)
 
ap 2.903
ep 0.051
sin(ip) 0.037
G 0.150
H 12.830
Mass
D
pV
Value
Rotational Period 49.650
Period quality 2
Spectral Class S
Spectral Class Score 5.323
Family data
[raw, vot]

Parent Parent name Family ID Family name Cj Author Reference Method
158 Koronis 0 Koronis Novakovic 2019EPSC...13.1671N HCM
158 Koronis 605 Koronis 0.4400 Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14
Proper elements data
[raw, vot]

ap ep sin(ip) Author Reference Method
2.9029 0.0505 0.0366 Novakovic_Radovic_Todovic 2003A&A...403.1165K Numeric-Nov-2024
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
12.83 MPC-2023-12-04 MPC-2023-12-04 Phot
Periods
[raw, vot]

Value Quality Side real or Synodic Author Reference Method
49.653 2 Synodic Erasmus 2020ApJS..247...13E Lightcurve
Spectral Class Data
[raw, vot]

Class 1 Class 2 Probability of Class 1 Probability of Class 2 Taxonomy Wavelength Author Reference Method
S S 0.8872 0.8872 Bus-Demeo VIS Sergeyev 2021A&A...652A..59S PHOT