Asteroids

2023RJ11 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Amor

Perihelion (q)

1.041

Aphelion (Q)

2.068

Eccentricity (e)

0.330

Inclination (i)

9.9

deg

Orbit period (P)

707.9

Earth MOID

0.03811

U parameter

7.5

Next Earth close approach

Date

2054-09-24

Nominal distance (from Earth center)

0.06166

9223736

Maximum Brightness

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.1

mag

Diameter

16 - 40*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-09-14

Observatory

Moonbase South Observatory, Hakos

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

1.554457

1-sigma variation

0.000782

Unit

Eccentricity (e)

Value

0.330142

1-sigma variation

0.000317

Unit

Inclination (i)

Value

9.9110

1-sigma variation

0.0071

Unit

Long. of Ascending Node (Ω)

Value

352.6192

1-sigma variation

0.0001

Unit

Arg. of Perihelion (ω)

Value

9.1015

1-sigma variation

0.0032

Unit

Mean Anomaly (M)

Value

40.84759

1-sigma variation

0.30369

Unit

Perihelion distance

Value

1.041266

1-sigma variation

Unit

Aphelion distance

Value

2.067649

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.038399

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.059858

1-sigma variation

Unit

MOID

Value

0.038108

1-sigma variation

Unit

Orbit Period

Value

707.8912

1-sigma variation

Unit

U parameter

Value

7.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.11353E-7	2.47950E-7	5.52372E-6	-1.04577E-7	-2.45199E-6	-2.37451E-4
e	2.47950E-7	1.00563E-7	2.24028E-6	-4.24166E-8	-9.94073E-7	-9.63046E-5
i	5.52372E-6	2.24028E-6	4.99088E-5	-9.44939E-7	-2.21592E-5	-2.14542E-3
Ω	-1.04577E-7	-4.24166E-8	-9.44939E-7	1.79552E-8	4.15739E-7	4.06195E-5
ω	-2.45199E-6	-9.94073E-7	-2.21592E-5	4.15739E-7	1.03561E-5	9.52114E-4
M	-2.37451E-4	-9.63046E-5	-2.14542E-3	4.06195E-5	9.52114E-4	9.22264E-2

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

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

26.092

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

16 - 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

Unit

Source

[-]

Download this part as:

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

768

Unit

Source

[1]

Normalized RMS of residuals

Value

0.822318

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-09-11.381972

Unit

Source

[2]

Last Observation

Value

2023-09-15.956493

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

56 (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

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

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 2023RJ11 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	1959-09-17 08:37	> 1 w	0.0385312	0.0385171	0.0033349
EARTH	1992-09-10 20:02	> 1 w	0.0545347	0.0333031	0.1000587
EARTH	2023-09-17 14:46	< 1 min	0.0382175	0.0381246	0.0000310
EARTH	2054-09-24 12:13	> 1 w	0.0616569	0.0307934	0.1083266
EARTH	2087-09-16 17:48	> 1 w	0.0384750	0.0379315	0.0089826
EARTH	2120-08-29 00:14	> 1 mo	0.1675044	0.0008230	0.8064431

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
354.53569144	252.61663995	0.03900023	MINIMUM
179.42919160	78.49822433	1.07203768	SADDLE
357.78634391	77.13801768	2.03767944	SADDLE
178.52959106	257.86696808	3.07092108	MAXIMUM

Download:

MOID Plots

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