Asteroids

2013BS45 help

Last update: 2025-07-29 02:36 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Aten

Perihelion (q)

0.908

Aphelion (Q)

1.075

Eccentricity (e)

0.084

Inclination (i)

0.8

deg

Orbit period (P)

360.6

Earth MOID

0.01142

U parameter

0.9

Next Earth close approach

Date

2087-09-08

Nominal distance (from Earth center)

0.13987

20924040

Maximum Brightness

24.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

25.8

mag

Diameter

18 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2013-01-20

Observatory

Steward Observatory, Kitt Peak-Spacewatch

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.991531

1-sigma variation

1.309E-8

Unit

Eccentricity (e)

Value

0.083789

1-sigma variation

3.091E-7

Unit

Inclination (i)

Value

0.7724

1-sigma variation

3.511E-6

Unit

Long. of Ascending Node (Ω)

Value

83.3984

1-sigma variation

0.0004

Unit

Arg. of Perihelion (ω)

Value

150.7576

1-sigma variation

0.0004

Unit

Mean Anomaly (M)

Value

50.19742

1-sigma variation

0.00007

Unit

Perihelion distance

Value

0.908451

1-sigma variation

Unit

Aphelion distance

Value

1.074610

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.077980

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.098079

1-sigma variation

Unit

MOID

Value

0.011421

1-sigma variation

Unit

Orbit Period

Value

360.6265

1-sigma variation

Unit

U parameter

Value

0.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.71378E-16	3.98490E-15	-4.12244E-14	-4.73241E-12	5.06067E-12	-8.75555E-13
e	3.98490E-15	9.55172E-14	-9.84571E-13	-1.13017E-10	1.20849E-10	-2.04654E-11
i	-4.12244E-14	-9.84571E-13	1.23251E-11	1.42342E-9	-1.50303E-9	2.11469E-10
Ω	-4.73241E-12	-1.13017E-10	1.42342E-9	1.65710E-7	-1.74957E-7	2.43582E-8
ω	5.06067E-12	1.20849E-10	-1.50303E-9	-1.74957E-7	1.84891E-7	-2.60888E-8
M	-8.75555E-13	-2.04654E-11	2.11469E-10	2.43582E-8	-2.60888E-8	4.52609E-9

Date of computation: 2025-07-29 02:36 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

Unit

Source

[-]

Quality

Value

Unit

Source

[-]

Amplitude

Value

Unit

mag

Source

[-]

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

[-]

Taxonomy (all)

Value

Unit

Source

[-]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

25.847

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

18 - 40*

Unit

Source

[2]

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

[3]

Download this part as:

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude
[3]	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

375

Unit

Source

[1]

Unobserved

Value

4221

Unit

Source

[1]

Normalized RMS of residuals

Value

0.331216

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2013-01-20.44396

Unit

Source

[2]

Last Observation

Value

2014-01-30.50797

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

92 (0)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2013-02-10

Unit

Source

[3]

Last Observation

Value

2013-02-13

Unit

Source

[3]

Delay (Discarded)

Value

3 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

3 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

6 (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 2013BS45 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	2010-02-06 18:04	< 1 s	0.1722426	0.1722411	0.0000005
EARTH	2011-02-09 16:56	< 1 s	0.1023556	0.1023544	0.0000004
EARTH	2012-02-12 02:09	< 1 s	0.0418245	0.0418238	0.0000002
EARTH	2013-02-12 01:17	< 1 s	0.0125697	0.0125697	0.0000000
EARTH	2014-02-11 07:10	< 1 s	0.0316964	0.0316961	0.0000001
EARTH	2015-02-09 11:14	< 1 s	0.0894101	0.0894098	0.0000001
EARTH	2016-02-07 04:17	< 1 s	0.1578716	0.1578711	0.0000002
EARTH	2087-09-08 09:45	< 1 min	0.1398686	0.1398474	0.0000071
EARTH	2088-09-05 01:28	< 1 min	0.0743228	0.0743037	0.0000064
EARTH	2089-09-03 04:34	< 1 min	0.0233768	0.0233658	0.0000037
EARTH	2090-09-02 17:35	< 1 min	0.0164733	0.0164669	0.0000021
EARTH	2091-09-04 12:32	< 1 min	0.0560107	0.0559766	0.0000114
EARTH	2092-09-06 02:25	< 1 min	0.1175779	0.1175316	0.0000155
EARTH	2093-09-09 03:37	< 1 min	0.1865040	0.1864497	0.0000181

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
272.39195247	38.90900504	0.01142125	MINIMUM
101.40676010	238.79715204	0.01328483	MINIMUM
186.30627167	318.29857701	0.08650371	SADDLE
7.65938797	139.57906486	0.10332415	SADDLE
7.81168860	319.76369719	1.89660955	SADDLE
186.93656011	138.88582334	2.08616228	MAXIMUM

Download:

MOID Plots

Click on the images to zoom-in and zoom-out