1999 RP27

1999RP27, 44612, J99R27P

All data for this body: [vot]

MPC data

Name (number)	1999 RP27 (44612)
a	2.19801
e	0.17769
i / sin(i)	1.1220 / 0.01958
q	1.80744
Q	2.58858
ω	189.4407
Node	141.5334
m	328.2382
n	0.3025
Epoch	2460800.5

n_obs	2135
n_opp	20
Years observed	1998-2025
rms	0.71

Best values

	Value	Standard error
Parent

a_p	2.198
e_p	0.120
sin(i_p)	0.017
G	0.150
H	15.650
Mass
D	1.96	0.301
pV	0.200	0.0587

	Value
Rotational Period	4.900
Period quality	3
Spectral Class	Sq/Q
Spectral Class Score	18.000

Family data

Parent	Parent name	Family ID	Family name	C_j	Author	Reference	Method
2110	Moore-Sitterly	-1	Moore-Sitterly	-1.0000	Nesvorny	2024ApJS..274...25N	HCM-2024

Proper elements data

a_p	e_p	sin(i_p)	Author	Reference	Method
2.1979	0.1201	0.0171	Novakovic_Radovic_Todovic	2003A&A...403.1165K	Numeric-Nov-2024

Diameter data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
1.96	0.301	0.301	Masiero	2011ApJ...741...68M	NEATM

Albedo data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.200	0.0587	0.0587	Masiero	2011ApJ...741...68M	NEATM

G data

Value	Uncertainty up	Uncertainty down	Author	Reference	Method
0.15			MPC-2023-12-94	MPC-2023-12-94	Phot

H data

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

Periods

Value	Quality	Side real or Synodic	Author	Reference	Method
4.90675	2	Synodic	Pravec	LCDB	Lightcurve
4.90675	3-	Synodic	Pravec	LCDB	Lightcurve
4.907	2	Synodic	Waszczak	2015AJ....150...75W	Lightcurve
4.907	3	Synodic	Pravec	2010Natur.466.1085P	Lightcurve
4.907058	2	Synodic	Pravec	2019Icar..333..429P	Lightcurve
4.907068	2	Sidereal	Polishook	2014Icar..241...79P	Model

Spectral Class Data

Class 1	Class 2	Probability of Class 1	Probability of Class 2	Taxonomy	Wavelength	Author	Reference	Method
S		0.589		Bus-Demeo	VIS	Sergeyev	2022A&A...658A.109S	PHOT
S		0.960000		Mahlke	VISNIR	Mahlke	2022A&A...665A..26M	SPEC
Sq/Q				Bus-DeMeo	NIR	Polishook	2014Icar..233....9P	SPEC