Asteroids

482650 2013BK18 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.822

Aphelion (Q)

2.431

Eccentricity (e)

0.495

Inclination (i)

28.9

deg

Orbit period (P)

757.7

Earth MOID

0.02156

U parameter

0.0

Next Earth close approach

Date

2042-02-01

Nominal distance (from Earth center)

0.13914

20814683

Maximum Brightness

18.2

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

19.6

mag

Diameter

300 - 700*

Taxonomic type

Rotation period (T)

4.690

Discovery Information

Discovery Date

2013-01-16

Observatory

Pan-STARRS 1, Haleakala

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

1.626543

1-sigma variation

6.391E-9

Unit

Eccentricity (e)

Value

0.494599

1-sigma variation

2.029E-8

Unit

Inclination (i)

Value

28.8834

1-sigma variation

9.711E-6

Unit

Long. of Ascending Node (Ω)

Value

137.6688

1-sigma variation

1.478E-6

Unit

Arg. of Perihelion (ω)

Value

64.6895

1-sigma variation

5.535E-6

Unit

Mean Anomaly (M)

Value

47.85619

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.822057

1-sigma variation

Unit

Aphelion distance

Value

2.431029

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.027407

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.543368

1-sigma variation

Unit

MOID

Value

0.021564

1-sigma variation

Unit

Orbit Period

Value

757.6990

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.08491E-17	3.65273E-17	1.34260E-14	1.52613E-15	5.80065E-16	-6.97528E-14
e	3.65273E-17	4.11851E-16	-1.12104E-14	1.74431E-14	-1.28829E-14	-4.48271E-14
i	1.34260E-14	-1.12104E-14	9.43107E-11	6.12193E-12	-3.96691E-12	-2.46349E-11
Ω	1.52613E-15	1.74431E-14	6.12193E-12	2.18304E-12	-6.13222E-12	-3.50989E-13
ω	5.80065E-16	-1.28829E-14	-3.96691E-12	-6.13222E-12	3.06361E-11	-1.05993E-11
M	-6.97528E-14	-4.48271E-14	-2.46349E-11	-3.50989E-13	-1.05993E-11	1.22657E-10

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

4.690

Unit

Source

[3]

[4]

Quality

Value

Unit

Source

[3]

[4]

Amplitude

Value

0.34

Unit

mag

Source

[3]

[4]

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]

Taxonomy (all)

Value

Unit

Source

[2]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

19.625

Unit

mag

Source

[5]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[5]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[6]

Diameter

Value

300 - 700*

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.) Michaël Marsset et al 2022 AJ 163 165
[2]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[3]	EARN	1.) Warner, B.D. (2015) Minor Planet Bul. 42, 172-183.
[4]	EARN	1.) Warner, B.D. (2015) MPB 42, 172-183. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2015 JANUARY - MARCH)(35NEAs)
[5]	ESA Aegis	ESA orbit determination and impact monitoring system
[6]	Estimation	Estimated from absolute magnitude
[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

2382

Unit

Source

[1]

Unobserved

Value

2277

Unit

Source

[1]

Normalized RMS of residuals

Value

0.573922

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2013-01-16.63278

Unit

Source

[2]

Last Observation

Value

2019-07-26.35336

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

201 (2)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2015-02-09

Unit

Source

[3]

Last Observation

Value

2015-02-11

Unit

Source

[3]

Delay (Discarded)

Value

3 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

3 (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 482650 2013BK18 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	1959-02-15 14:39	< 1 min	0.1404670	0.1404635	0.0000012
EARTH	1986-02-03 12:54	< 1 min	0.1019568	0.1019535	0.0000011
EARTH	2015-02-12 08:40	< 1 s	0.0812961	0.0812961	0.0000000
EARTH	2042-02-01 16:32	< 1 min	0.1391376	0.1391346	0.0000010
EARTH	2071-02-12 21:18	< 1 min	0.0933205	0.0933163	0.0000014
EARTH	2098-02-03 22:25	< 1 min	0.0918030	0.0918006	0.0000008

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
320.69962573	36.27178564	0.02177150	MINIMUM
57.87848983	190.42994531	0.31252748	MINIMUM
14.85095680	124.33487875	0.48866238	SADDLE
186.40222183	281.54087324	1.59952428	SADDLE
6.01668672	287.22274288	1.76843830	SADDLE
177.55297447	95.94955807	3.36176188	MAXIMUM

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MOID Plots

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