Asteroids

206378 2003RB help

Last update: 2025-09-10 00:30 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

1.003

Aphelion (Q)

2.573

Eccentricity (e)

0.439

Inclination (i)

6.7

deg

Orbit period (P)

873.5

Earth MOID

0.04411

U parameter

0.0

Next Earth close approach

Date

2058-10-20

Nominal distance (from Earth center)

0.13503

20200855

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

18.7

mag

Diameter

300

Taxonomic type

Rotation period (T)

37.5

Discovery Information

Discovery Date

2003-09-01

Observatory

Lincoln Laboratory ETS, New Mexico

ORBIT VISUALISATION TOOLS

External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

Epoch
Semimajor Axis
Eccentricity (e)
Inclination (i)
Long. of Ascending Node (Ω)
Arg. of Perihelion (ω)
Mean Anomaly (M)
Perihelion distance
Aphelion distance
Asc. Node-Earth Sep.
Desc. Node-Earth Sep.
MOID
Orbit Period
U parameter

Value

1-sigma variation

Unit

Epoch

Value

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.788285

1-sigma variation

8.716E-10

Unit

Eccentricity (e)

Value

0.438983

1-sigma variation

7.840E-9

Unit

Inclination (i)

Value

6.7238

1-sigma variation

2.545E-6

Unit

Long. of Ascending Node (Ω)

Value

317.1176

1-sigma variation

8.742E-6

Unit

Arg. of Perihelion (ω)

Value

44.0800

1-sigma variation

9.752E-6

Unit

Mean Anomaly (M)

Value

91.84604

1-sigma variation

1.577E-6

Unit

Perihelion distance

Value

1.003258

1-sigma variation

Unit

Aphelion distance

Value

2.573312

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.082702

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.122168

1-sigma variation

Unit

MOID

Value

0.044109

1-sigma variation

Unit

Orbit Period

Value

873.4811

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.59751E-19	-1.28131E-18	9.04957E-16	-1.48443E-15	7.37402E-16	-8.77563E-16
e	-1.28131E-18	6.14582E-17	-1.36639E-15	-1.93758E-14	4.76162E-14	-7.65691E-15
i	9.04957E-16	-1.36639E-15	6.47740E-12	1.38906E-11	-1.31359E-11	-1.62508E-12
Ω	-1.48443E-15	-1.93758E-14	1.38906E-11	7.64251E-11	-7.89670E-11	3.64700E-12
ω	7.37402E-16	4.76162E-14	-1.31359E-11	-7.89670E-11	9.51030E-11	-7.10467E-12
M	-8.77563E-16	-7.65691E-15	-1.62508E-12	3.64700E-12	-7.10467E-12	2.48710E-12

Date of computation: 2025-09-10 00:30 UTC

Note: The ASCII file is in a format suitable for Orbfit input.

Download ASCII file:

Physical properties

Rotation Period
Quality
Amplitude
Rotation Direction
Spinvector L
Spinvector B

Rotational properties

Value

Unit

Source

Rotation Period

Value

37.5

Unit

Source

[5]

Quality

Value

2,T,U

Unit

Source

[5]

Amplitude

Value

0.43

Unit

mag

Source

[5]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[-]

Spinvector B

Value

Unit

Source

[-]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[1]

[2]

[3]

Taxonomy (all)

Value

Unit

Source

[4]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

18.722

Unit

mag

Source

[6]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[6]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.44

Unit

Source

[7]

Diameter

Value

300

Unit

Source

[7]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

0.6177

-0.029

0.2131

0.2427

0.5881

0.375

Unit

g-i

i-z

r-z

r-i

g-z

g-r

Source

[2]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Unit

Source

[8]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Alexey V. Sergeyev and Benoit Carry A&A, 652 (2021) A59
[2]	EARN	1.) A. V. Sergeyev, B. Carry et al A&A, 658 (2022) A109
[3]	EARN	1.) Michaël Marsset et al 2022 AJ 163 165
[4]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[5]	EARN	1.) Warner, B.D. (2016) MPB 43, 66-79. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2015 JUNE-SEPTEMBER)(36 NEAs) 2.) Petr Pravec's Ondrejov NEO Photometric Program Webpage "Prepublished Periods"
[6]	ESA Aegis	ESA orbit determination and impact monitoring system
[7]	EARN	1.) Nugent, C.R. et al. (2016) Astron. J. 152_63 (12pp) (NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos) (207 NEOs)
[8]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

7418

Unit

Source

[1]

Unobserved

Value

1208

Unit

Source

[1]

Normalized RMS of residuals

Value

0.401685

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2002-02-13.32372

Unit

Source

[2]

Last Observation

Value

2022-06-06.302304

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

1422 (3)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

2015-08-17

Unit

Source

[3]

Last Observation

Value

2015-08-25

Unit

Source

[3]

Delay (Discarded)

Value

5 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

3 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

8 (0)

Unit

Source

[1]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	MPC	Minor Planet Center: https://www.minorplanetcenter.net
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Close Approaches for 206378 2003RB from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	2003-09-28 07:24	< 1 s	0.0933569	0.0933568	0.0000000
EARTH	2015-08-22 02:58	< 1 s	0.0531279	0.0531279	0.0000000
EARTH	2058-10-20 11:40	< 1 min	0.1350344	0.1350340	0.0000001
EARTH	2070-08-25 20:44	< 1 min	0.0467229	0.0467228	0.0000000
EARTH	2113-10-11 06:10	< 1 min	0.1106898	0.1106879	0.0000006
EARTH	2125-08-18 13:11	< 1 min	0.0864367	0.0864330	0.0000013

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
342.82245200	232.38319630	0.04497483	MINIMUM
179.78775366	78.27820033	1.58158638	SADDLE
358.54490971	77.34751422	1.99832836	SADDLE
179.04438227	257.81224933	3.57359557	MAXIMUM

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MOID Plots

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