Asteroids

454101 2013BP73 help

Last update: 2026-07-30 09:40 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.493

Aphelion (Q)

2.164

Eccentricity (e)

0.629

Inclination (i)

6.9

deg

Orbit period (P)

559.2

Earth MOID

0.00190

U parameter

0.0

Next Earth close approach

Date

2041-12-09

Nominal distance (from Earth center)

0.04725

7067984

Maximum Brightness

16.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

20.3

mag

Diameter

230 - 500*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2013-01-22

Observatory

University of Arizona Mt. Lemmon Survey

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.328337

1-sigma variation

2.651E-9

Unit

Eccentricity (e)

Value

0.628940

1-sigma variation

3.230E-8

Unit

Inclination (i)

Value

6.8551

1-sigma variation

4.494E-6

Unit

Long. of Ascending Node (Ω)

Value

79.9819

1-sigma variation

3.129E-5

Unit

Arg. of Perihelion (ω)

Value

251.9323

1-sigma variation

2.941E-5

Unit

Mean Anomaly (M)

Value

349.59337

1-sigma variation

3.167E-6

Unit

Perihelion distance

Value

0.492893

1-sigma variation

Unit

Aphelion distance

Value

2.163781

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.012148

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.343298

1-sigma variation

Unit

MOID

Value

0.001904

1-sigma variation

Unit

Orbit Period

Value

559.1918

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	7.02952E-18	-6.44705E-17	2.80447E-16	-4.35084E-15	-3.88943E-15	-2.00595E-15
e	-6.44705E-17	1.04344E-15	-5.21057E-15	9.47840E-14	2.73429E-14	2.86050E-14
i	2.80447E-16	-5.21057E-15	2.01998E-11	-4.74418E-11	5.55571E-11	-6.11201E-12
Ω	-4.35084E-15	9.47840E-14	-4.74418E-11	9.79054E-10	-9.03985E-10	-3.44234E-11
ω	-3.88943E-15	2.73429E-14	5.55571E-11	-9.03985E-10	8.65196E-10	2.45225E-11
M	-2.00595E-15	2.86050E-14	-6.11201E-12	-3.44234E-11	2.45225E-11	1.00314E-11

Date of computation: 2026-07-30 09:40 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

[1]

Taxonomy (all)

Value

Unit

Source

[2]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

20.301

Unit

mag

Source

[3]

Slope Parameter (G)

Value

0.15**

Unit

Source

[3]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[4]

Diameter

Value

230 - 500*

Unit

Source

[4]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Unit

Source

[-]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Alexey V. Sergeyev and Benoit Carry A&A, 652 (2021) A59
[2]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[3]	ESA Aegis	ESA orbit determination and impact monitoring system
[4]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

8432

Unit

Source

[1]

Unobserved

Value

120

Unit

Source

[1]

Normalized RMS of residuals

Value

0.442673

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2003-04-01.338057

Unit

Source

[2]

Last Observation

Value

2026-05-01.891578

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

343 (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

Unit

Source

[-]

Last Observation

Value

Unit

Source

[-]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[-]

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

Filters

Initial Date: *

Final Date: *

Normalised Only accepted

Max residual (arcsec):

* - these fields are required

Plot

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Note: Ephemerides requests are limited to a maximum of 1000 points and a final date not exceeding 2040/12/31 00:00.

Close Approaches for 454101 2013BP73 from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1952-12-07 06:57	< 1 min	0.0639566	0.0639526	0.0000013
EARTH	1960-05-06 21:47	< 1 min	0.0936737	0.0936721	0.0000006
EARTH	1972-12-11 10:00	< 1 min	0.0262701	0.0262647	0.0000018
EARTH	1980-05-12 01:44	< 1 min	0.1691951	0.1691896	0.0000018
VENUS	1980-06-05 00:51	< 1 min	0.0438086	0.0438017	0.0000023
VENUS	1983-07-03 20:44	< 1 min	0.0383596	0.0383501	0.0000032
VENUS	1986-07-30 18:00	< 1 min	0.0497092	0.0497017	0.0000025
EARTH	1992-12-10 02:36	< 1 min	0.0132572	0.0132560	0.0000004
EARTH	2000-04-26 19:48	< 1 min	0.1726397	0.1726384	0.0000004
EARTH	2018-12-17 03:15	< 1 s	0.1317693	0.1317690	0.0000001
EARTH	2026-05-04 05:15	< 1 s	0.0728510	0.0728509	0.0000001
VENUS	2031-02-26 12:39	< 1 s	0.0227541	0.0227540	0.0000000
EARTH	2041-12-09 04:38	< 1 min	0.0472466	0.0472428	0.0000012
EARTH	2052-05-12 19:15	< 1 min	0.1757519	0.1757502	0.0000006
VENUS	2055-06-29 09:42	< 1 min	0.0293259	0.0293243	0.0000005
EARTH	2067-12-16 10:41	< 1 min	0.1027029	0.1026991	0.0000013
EARTH	2075-05-03 10:34	< 1 min	0.0821679	0.0821645	0.0000011
EARTH	2090-12-05 20:29	< 1 min	0.1357939	0.1357827	0.0000037
VENUS	2096-12-26 20:13	< 1 min	0.0483356	0.0483236	0.0000040
VENUS	2100-01-19 13:59	< 1 min	0.0474144	0.0474055	0.0000029
EARTH	2101-05-11 20:49	< 1 min	0.1328960	0.1328902	0.0000019
EARTH	2116-12-15 07:09	< 1 min	0.0624414	0.0624254	0.0000053
EARTH	2124-05-03 21:47	< 1 min	0.0833879	0.0833783	0.0000032

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
65.76194755	335.04558518	0.00190404	MINIMUM
293.38201050	118.84443190	0.07137447	MINIMUM
358.85869820	226.40817135	0.52468889	SADDLE
179.86098196	46.99633330	1.18670238	SADDLE
358.52328677	45.65119120	1.47943701	SADDLE
179.49968786	226.81646042	3.17078253	MAXIMUM

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MOID Plots

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