Asteroids

2024BR4 help

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

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.823

Aphelion (Q)

1.273

Eccentricity (e)

0.214

Inclination (i)

19.9

deg

Orbit period (P)

392.0

Earth MOID

0.03074

U parameter

3.1

Next Earth close approach

Date

2039-02-24

Nominal distance (from Earth center)

0.16502

24685955

Maximum Brightness

20.8

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

21.3

mag

Diameter

140 - 300*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2024-01-30

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

1.048158

1-sigma variation

4.336E-7

Unit

Eccentricity (e)

Value

0.214462

1-sigma variation

0.000001

Unit

Inclination (i)

Value

19.8916

1-sigma variation

0.0001

Unit

Long. of Ascending Node (Ω)

Value

327.4301

1-sigma variation

1.810E-5

Unit

Arg. of Perihelion (ω)

Value

256.3757

1-sigma variation

0.0001

Unit

Mean Anomaly (M)

Value

0.72243

1-sigma variation

0.00041

Unit

Perihelion distance

Value

0.823368

1-sigma variation

Unit

Aphelion distance

Value

1.272949

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.040918

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.035993

1-sigma variation

Unit

MOID

Value

0.030739

1-sigma variation

Unit

Orbit Period

Value

391.9574

1-sigma variation

Unit

U parameter

Value

3.1

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.87988E-13	6.02311E-13	2.63669E-11	6.62704E-12	2.70889E-11	-1.77308E-10
e	6.02311E-13	1.93363E-12	8.47434E-11	2.12757E-11	8.72284E-11	-5.68123E-10
i	2.63669E-11	8.47434E-11	3.75024E-9	9.41327E-10	3.82480E-9	-2.48765E-8
Ω	6.62704E-12	2.12757E-11	9.41327E-10	3.27501E-10	8.76491E-10	-6.26322E-9
ω	2.70889E-11	8.72284E-11	3.82480E-9	8.76491E-10	4.03993E-9	-2.55535E-8
M	-1.77308E-10	-5.68123E-10	-2.48765E-8	-6.26322E-9	-2.55535E-8	1.67248E-7

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

21.335

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

140 - 300*

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

242

Unit

Source

[1]

Unobserved

Value

679

Unit

Source

[1]

Normalized RMS of residuals

Value

0.735906

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2024-01-28.711867

Unit

Source

[2]

Last Observation

Value

2024-09-26.550918

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

98 (4)

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 2024BR4 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	1950-02-04 03:56	1.0	0.1852134	0.1851572	0.0000188
EARTH	1952-08-17 05:24	< 1 min	0.0354897	0.0354894	0.0000001
EARTH	1965-02-10 11:51	2.4	0.0632773	0.0631974	0.0000266
EARTH	1967-08-21 04:28	1.5	0.1329854	0.1328689	0.0000388
EARTH	1980-02-15 19:06	3.7	0.0419064	0.0418212	0.0000284
EARTH	1995-02-25 14:44	5.9	0.1791900	0.1790020	0.0000627
EARTH	1996-08-16 03:56	< 1 min	0.0826212	0.0824358	0.0000618
EARTH	2009-02-05 20:08	3.5	0.1519159	0.1517636	0.0000507
EARTH	2011-08-18 21:22	1.7	0.0552056	0.0550827	0.0000410
EARTH	2024-02-14 11:02	< 1 s	0.0307233	0.0307227	0.0000002
EARTH	2039-02-24 10:52	5.1	0.1650154	0.1648469	0.0000562
EARTH	2040-08-16 03:48	< 1 min	0.0917831	0.0916335	0.0000499
EARTH	2053-02-06 11:00	5.6	0.1429649	0.1427124	0.0000841
EARTH	2055-08-19 08:30	3.0	0.0676591	0.0674525	0.0000689
EARTH	2068-02-16 01:45	4.2	0.0409047	0.0407948	0.0000367
EARTH	2084-08-17 10:28	< 1 min	0.0354116	0.0354078	0.0000013
EARTH	2097-02-17 06:47	3.2	0.0671351	0.0670351	0.0000334
EARTH	2098-08-17 09:38	1.3	0.1696535	0.1695222	0.0000438
EARTH	2111-02-11 06:54	4.4	0.0846149	0.0844432	0.0000572
EARTH	2113-08-22 07:32	2.5	0.1485778	0.1483905	0.0000624

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
292.76382148	39.77597703	0.03073875	MINIMUM
88.06731532	220.67932333	0.03369676	MINIMUM
10.53643805	131.52184773	0.36568900	SADDLE
190.37686435	308.04962709	0.47616095	SADDLE
6.33517861	305.92833948	1.78815626	SADDLE
179.79864053	119.10430939	2.24920086	MAXIMUM

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MOID Plots

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