Asteroids

163696 2003EB50 help

Last update: 2025-09-10 09:18 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.756

Aphelion (Q)

2.386

Eccentricity (e)

0.519

Inclination (i)

29.5

deg

Orbit period (P)

719.2

Earth MOID

0.05350

U parameter

0.0

Next Earth close approach

Date

2027-06-04

Nominal distance (from Earth center)

0.17619

26357311

Maximum Brightness

15.1

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

16.5

mag

Diameter

1680

Taxonomic type

Rotation period (T)

62.06

Discovery Information

Discovery Date

2003-03-10

Observatory

Lowell Observatory-LONEOS

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

1.571010

1-sigma variation

1.510E-9

Unit

Eccentricity (e)

Value

0.518916

1-sigma variation

9.721E-9

Unit

Inclination (i)

Value

29.5024

1-sigma variation

2.284E-6

Unit

Long. of Ascending Node (Ω)

Value

65.6055

1-sigma variation

9.554E-7

Unit

Arg. of Perihelion (ω)

Value

278.9560

1-sigma variation

1.260E-6

Unit

Mean Anomaly (M)

Value

49.35443

1-sigma variation

2.146E-6

Unit

Perihelion distance

Value

0.755787

1-sigma variation

Unit

Aphelion distance

Value

2.386233

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.075420

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.234135

1-sigma variation

Unit

MOID

Value

0.053504

1-sigma variation

Unit

Orbit Period

Value

719.2287

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.27999E-18	-1.22049E-17	-1.45880E-15	1.29029E-15	-1.70859E-16	-3.20169E-15
e	-1.22049E-17	9.44954E-17	7.34299E-15	-6.54392E-15	-4.68652E-15	1.76279E-14
i	-1.45880E-15	7.34299E-15	5.21524E-12	-1.17045E-12	1.23951E-12	1.49159E-12
Ω	1.29029E-15	-6.54392E-15	-1.17045E-12	9.12763E-13	-4.26917E-13	-1.75765E-12
ω	-1.70859E-16	-4.68652E-15	1.23951E-12	-4.26917E-13	1.58798E-12	-2.57380E-14
M	-3.20169E-15	1.76279E-14	1.49159E-12	-1.75765E-12	-2.57380E-14	4.60476E-12

Date of computation: 2025-09-10 09:18 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

62.40

62.06

Unit

Source

[4]

[1]

Quality

Value

2,T,U

Unit

Source

[4]

Amplitude

Value

1.01

0.81

Unit

mag

Source

[1]

[4]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

217

Unit

Source

[1]

Spinvector B

Value

Unit

Source

[1]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[2]

Taxonomy (all)

Value

Unit

Source

[3]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

16.507

Unit

mag

Source

[5]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[5]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.165

Unit

Source

[6]

Diameter

Value

1680

Unit

Source

[6]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Unit

Source

[7]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Near-Earth Asteroid Lightcurve Analysis at the Center for Solar System Studies: 2019 March-July, B.D. Warner
[2]	EARN	1.) Michaël Marsset et al 2022 AJ 163 165
[3]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[4]	EARN	1.) Warner, B.D. (2016) MPB 43, 240-250. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2016 JANUARY-APRIL)(38NEAs) 2.) Warner, B.D. (2014) MPB 41,113-124. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2013 SEPTEMBER-DECEMBER)(LCs of 36 NEAs)
[5]	ESA Aegis	ESA orbit determination and impact monitoring system
[6]	EARN	1.) Joseph R. Masiero et al 2021 Planet. Sci. J. 2 162
[7]	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

8197

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.473019

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2003-03-10.35233

Unit

Source

[2]

Last Observation

Value

2025-08-18.401714

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

5980 (20)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2015-11-29

Unit

Source

[3]

Last Observation

Value

2017-11-17

Unit

Source

[3]

Delay (Discarded)

Value

8 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

6 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

14 (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 163696 2003EB50 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	1950-11-30 19:02	< 1 min	0.1632330	0.1632311	0.0000006
EARTH	1952-11-22 19:02	< 1 min	0.0633505	0.0633496	0.0000003
EARTH	1962-06-07 08:41	< 1 min	0.1454422	0.1454421	0.0000000
EARTH	2015-11-29 10:30	< 1 s	0.1254342	0.1254341	0.0000000
EARTH	2017-11-21 02:06	< 1 s	0.0940683	0.0940683	0.0000000
EARTH	2025-06-10 03:19	< 1 s	0.1773897	0.1773896	0.0000000
EARTH	2027-06-04 18:41	< 1 s	0.1761877	0.1761876	0.0000000
EARTH	2078-11-26 08:02	< 1 min	0.0682285	0.0682271	0.0000005
EARTH	2080-11-17 18:28	< 1 min	0.1614213	0.1614193	0.0000007
EARTH	2088-06-07 16:38	< 1 min	0.1546591	0.1546589	0.0000001

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
48.02226712	321.14287944	0.05350362	MINIMUM
304.15744328	154.74678418	0.14854868	MINIMUM
354.83130650	235.29772172	0.51217241	SADDLE
177.30301233	62.41026180	1.59445816	SADDLE
356.88281750	59.51167327	1.69242504	SADDLE
180.61819995	244.52622936	3.30377774	MAXIMUM

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MOID Plots

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