Asteroids

2023BC help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.787

Aphelion (Q)

2.244

Eccentricity (e)

0.481

Inclination (i)

4.6

deg

Orbit period (P)

681.4

Earth MOID

0.01807

U parameter

8.5

Next Earth close approach

Date

2049-06-15

Nominal distance (from Earth center)

0.07871

11775459

Maximum Brightness

22.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.9

mag

Diameter

28 - 60*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-01-18

Observatory

Pan-STARRS 2, Haleakala

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

1.515409

1-sigma variation

0.003107

Unit

Eccentricity (e)

Value

0.480982

1-sigma variation

0.001330

Unit

Inclination (i)

Value

4.6204

1-sigma variation

0.0099

Unit

Long. of Ascending Node (Ω)

Value

320.1810

1-sigma variation

0.0043

Unit

Arg. of Perihelion (ω)

Value

234.2814

1-sigma variation

0.0028

Unit

Mean Anomaly (M)

Value

158.88201

1-sigma variation

1.57829

Unit

Perihelion distance

Value

0.786525

1-sigma variation

Unit

Aphelion distance

Value

2.244294

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.605726

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.077909

1-sigma variation

Unit

MOID

Value

0.018072

1-sigma variation

Unit

Orbit Period

Value

681.3863

1-sigma variation

Unit

U parameter

Value

8.5

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	9.65104E-6	4.13113E-6	3.07787E-5	1.28304E-5	7.91473E-6	-4.90312E-3
e	4.13113E-6	1.76833E-6	1.31748E-5	5.49283E-6	3.38751E-6	-2.09878E-3
i	3.07787E-5	1.31748E-5	9.81903E-5	4.06943E-5	2.54242E-5	-1.56368E-2
Ω	1.28304E-5	5.49283E-6	4.06943E-5	1.86537E-5	9.24372E-6	-6.51851E-3
ω	7.91473E-6	3.38751E-6	2.54242E-5	9.24372E-6	7.56305E-6	-4.02092E-3
M	-4.90312E-3	-2.09878E-3	-1.56368E-2	-6.51851E-3	-4.02092E-3	2.49099E0

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

24.855

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

28 - 60*

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

1028

Unit

Source

[1]

Normalized RMS of residuals

Value

0.512268

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-01-18.37178

Unit

Source

[2]

Last Observation

Value

2023-01-24.126033

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

33 (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

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 2023BC 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	1952-06-25 18:25	> 1 mo	0.1279076	0.0650693	1.1284268
EARTH	1954-01-31 03:44	> 1 mo	0.0468249	0.0202388	1.2856056
EARTH	1980-06-20 19:28	> 1 w	0.0736120	0.0661692	0.1803523
EARTH	1982-01-25 05:06	> 1 mo	0.0323569	0.0191871	0.4767548
EARTH	1995-03-13 09:40	> 1 mo	0.1972985	0.0881153	0.1779037
EARTH	2008-05-11 22:56	> 1 mo	0.1909997	0.0804937	0.1235688
EARTH	2021-06-23 20:07	> 1 d	0.0930275	0.0653912	0.0261584
EARTH	2023-01-28 07:14	< 1 min	0.0188876	0.0187424	0.0000484
EARTH	2049-06-15 02:52	> 1 mo	0.0787141	0.0649345	0.2780135
EARTH	2051-01-20 13:35	> 1 mo	0.1101896	0.0185974	0.5851962
EARTH	2064-03-03 05:54	> 1 mo	0.1768198	0.0581001	0.3850932
EARTH	2077-05-08 21:41	> 1 mo	0.1982360	0.0868541	0.2877781
EARTH	2090-06-26 01:37	> 1 mo	0.1077544	0.0640541	0.5611122
EARTH	2092-01-31 05:05	> 1 mo	0.0308200	0.0165222	0.5659280
EARTH	2118-07-02 15:00	> 1 mo	0.1881154	0.0625079	2.2945096
EARTH	2120-02-17 03:43	> 1 mo	0.1272200	0.0267245	2.0749489

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
317.13318933	24.78579992	0.01802820	MINIMUM
47.33647619	165.11692200	0.06562993	MINIMUM
3.59140080	97.03615949	0.22276539	SADDLE
181.01135919	273.16510988	1.24919343	SADDLE
2.33143558	274.90538203	1.78454119	SADDLE
180.66097823	92.95820211	3.24347968	MAXIMUM

Download:

MOID Plots

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