Asteroids

2023BR help

Last update: 2026-07-30 14:25 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.932

Aphelion (Q)

1.820

Eccentricity (e)

0.323

Inclination (i)

27.0

deg

Orbit period (P)

589.4

Earth MOID

0.06005

U parameter

8.9

Next Earth close approach

Date

2044-01-18

Nominal distance (from Earth center)

0.15992

23923531

Maximum Brightness

22.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.4

mag

Diameter

40 - 80*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-01-21

Observatory

University of Arizona Catalina Sky 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

1.375822

1-sigma variation

0.004617

Unit

Eccentricity (e)

Value

0.322848

1-sigma variation

0.002165

Unit

Inclination (i)

Value

26.9548

1-sigma variation

0.1044

Unit

Long. of Ascending Node (Ω)

Value

120.1087

1-sigma variation

0.0068

Unit

Arg. of Perihelion (ω)

Value

57.9131

1-sigma variation

0.1327

Unit

Mean Anomaly (M)

Value

4.93815

1-sigma variation

3.56826

Unit

Perihelion distance

Value

0.931641

1-sigma variation

Unit

Aphelion distance

Value

1.820003

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.067913

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.471296

1-sigma variation

Unit

MOID

Value

0.060047

1-sigma variation

Unit

Orbit Period

Value

589.4430

1-sigma variation

Unit

U parameter

Value

8.9

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	2.13126E-5	9.99289E-6	4.81849E-4	3.13172E-5	-6.12327E-4	-1.64731E-2
e	9.99289E-6	4.68562E-6	2.25934E-4	1.46847E-5	-2.87034E-4	-7.72380E-3
i	4.81849E-4	2.25934E-4	1.08943E-2	7.08072E-4	-1.38414E-2	-3.72435E-1
Ω	3.13172E-5	1.46847E-5	7.08072E-4	4.60219E-5	-8.99484E-4	-2.42060E-2
ω	-6.12327E-4	-2.87034E-4	-1.38414E-2	-8.99484E-4	1.76132E-2	4.73276E-1
M	-1.64731E-2	-7.72380E-3	-3.72435E-1	-2.42060E-2	4.73276E-1	1.27325E1

Date of computation: 2026-07-30 14:25 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

24.351

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

40 - 80*

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

Unit

Source

[-]

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Sources

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

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

1292

Unit

Source

[1]

Normalized RMS of residuals

Value

0.58645

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-01-15.507688

Unit

Source

[2]

Last Observation

Value

2023-01-21.888206

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

18 (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

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 2023BR 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	1952-01-20 01:51	> 1 mo	0.1223147	0.0573289	1.4169289
EARTH	1981-01-29 07:09	> 1 mo	0.1992581	0.0535931	1.2026023
EARTH	2002-01-25 15:18	> 1 w	0.0867386	0.0592686	0.4771564
EARTH	2023-01-23 00:30	< 1 min	0.0642072	0.0633960	0.0002704
EARTH	2044-01-18 19:18	> 1 w	0.1599189	0.0568346	0.6104447
EARTH	2073-01-27 23:50	> 1 mo	0.1526978	0.0573216	1.1481190
EARTH	2094-01-24 07:44	> 1 mo	0.0631622	0.0606285	0.3800159
EARTH	2115-01-21 19:47	> 1 mo	0.1099534	0.0598109	2.7419694

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
319.56457700	18.48104897	0.06004662	MINIMUM
75.22227975	170.35332071	0.34447832	MINIMUM
25.89762274	108.63713329	0.46175782	SADDLE
195.57727729	263.08621573	0.99121881	SADDLE
9.60779654	263.80086615	1.89205157	SADDLE
175.05330474	67.42191942	2.76637624	MAXIMUM

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MOID Plots

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