Asteroids

2023BY help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Aten

Perihelion (q)

0.474

Aphelion (Q)

1.189

Eccentricity (e)

0.430

Inclination (i)

0.9

deg

Orbit period (P)

277.0

Earth MOID

0.00533

U parameter

7.0

Next Earth close approach

Date

2026-01-06

Nominal distance (from Earth center)

0.16807

25142277

Maximum Brightness

23.9

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

26.4

mag

Diameter

14 - 30*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2023-01-21

Observatory

MARGO, Nauchnyi

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

0.831627

1-sigma variation

0.000074

Unit

Eccentricity (e)

Value

0.429603

1-sigma variation

0.000970

Unit

Inclination (i)

Value

0.9003

1-sigma variation

0.0025

Unit

Long. of Ascending Node (Ω)

Value

59.5027

1-sigma variation

0.1073

Unit

Arg. of Perihelion (ω)

Value

202.3568

1-sigma variation

0.1015

Unit

Mean Anomaly (M)

Value

163.95658

1-sigma variation

0.27901

Unit

Perihelion distance

Value

0.474357

1-sigma variation

Unit

Aphelion distance

Value

1.188897

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.136345

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.528076

1-sigma variation

Unit

MOID

Value

0.005328

1-sigma variation

Unit

Orbit Period

Value

277.0075

1-sigma variation

Unit

U parameter

Value

7.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	5.52017E-9	-6.43138E-8	-1.82206E-7	-3.90565E-6	3.13030E-6	-2.02927E-5
e	-6.43138E-8	9.41318E-7	2.21784E-6	4.73268E-6	3.76734E-6	2.61406E-4
i	-1.82206E-7	2.21784E-6	6.06760E-6	1.09488E-4	-8.41591E-5	6.82168E-4
Ω	-3.90565E-6	4.73268E-6	1.09488E-4	1.15069E-2	-1.08450E-2	9.05292E-3
ω	3.13030E-6	3.76734E-6	-8.41591E-5	-1.08450E-2	1.02934E-2	-6.27204E-3
M	-2.02927E-5	2.61406E-4	6.82168E-4	9.05292E-3	-6.27204E-3	7.78484E-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

26.408

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

14 - 30*

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

1001

Unit

Source

[1]

Normalized RMS of residuals

Value

0.5931

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-01-21.90074

Unit

Source

[2]

Last Observation

Value

2023-01-24.156047

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

24 (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 2023BY 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	1951-01-15 04:23	> 1 d	0.1293160	0.0897571	0.0132483
MERCURY	1952-10-20 15:05	> 1 d	0.0323351	0.0081249	0.0082401
EARTH	1953-12-20 23:13	> 1 d	0.1999819	0.1932969	0.0022297
EARTH	1956-11-26 13:41	> 1 d	0.1831380	0.1760532	0.0023617
MERCURY	1958-02-11 20:14	> 1 d	0.0469673	0.0342378	0.0048052
EARTH	1959-11-04 15:59	99.7	0.0736209	0.0691312	0.0015008
EARTH	1962-11-02 17:38	14.2	0.0965084	0.0812515	0.0050864
EARTH	1970-01-21 05:24	637.5	0.1986704	0.1494725	0.0164351
EARTH	1973-01-25 00:18	112.5	0.0198634	0.0099521	0.0150361
EARTH	1976-01-16 23:28	> 1 d	0.1212608	0.0824987	0.0129256
EARTH	1978-12-25 18:12	> 1 d	0.1936458	0.1842522	0.0031342
EARTH	1981-12-03 18:07	> 1 d	0.1957768	0.1872361	0.0028483
EARTH	1984-11-11 10:15	> 1 d	0.1279445	0.1102684	0.0058921
EARTH	1987-11-02 05:01	76.4	0.0083165	0.0048680	0.0037853
MERCURY	1994-06-18 09:23	> 1 d	0.0261505	0.0216047	0.0022469
EARTH	1998-01-25 19:06	73.5	0.0193331	0.0140485	0.0050370
EARTH	2001-01-12 01:44	> 1 d	0.1449126	0.1289968	0.0053114
VENUS	2002-02-26 12:05	587.2	0.0368721	0.0317796	0.0040179
EARTH	2006-11-21 09:50	> 1 d	0.1660551	0.1561649	0.0032981
EARTH	2009-11-02 10:11	208.8	0.0257915	0.0058572	0.0078067
VENUS	2011-01-17 06:16	579.1	0.0336070	0.0314044	0.0039654
EARTH	2012-11-03 23:16	242.7	0.1425655	0.1264034	0.0053878
MERCURY	2014-12-01 22:21	955.8	0.0324629	0.0199414	0.0054296
EARTH	2020-01-23 10:26	86.0	0.1626042	0.1552281	0.0024593
MERCURY	2020-03-24 03:44	354.7	0.0228733	0.0218111	0.0003733
EARTH	2023-01-25 19:15	< 1 min	0.0217071	0.0215479	0.0000530
MERCURY	2025-07-20 19:06	731.4	0.0445734	0.0371311	0.0027572
EARTH	2026-01-06 03:15	888.3	0.1680657	0.1653319	0.0009115
EARTH	2031-11-12 07:08	> 1 d	0.1286602	0.1089658	0.0065665
EARTH	2034-11-02 07:38	163.1	0.0492642	0.0168964	0.0109226
MERCURY	2035-05-21 17:45	1381.8	0.0479246	0.0218978	0.0100437
MERCURY	2040-09-20 11:52	1390.6	0.0399827	0.0305489	0.0035970
EARTH	2042-01-22 04:44	119.1	0.1892723	0.1789028	0.0034568
VENUS	2043-08-25 22:38	206.8	0.0316400	0.0315500	0.0000300
EARTH	2045-01-25 11:46	100.6	0.0209384	0.0164248	0.0017404
EARTH	2048-01-03 07:08	808.1	0.1788110	0.1746208	0.0013968
MERCURY	2050-07-30 15:25	938.4	0.0250405	0.0228148	0.0009001
EARTH	2050-12-03 13:38	955.9	0.1966966	0.1943914	0.0007685
EARTH	2053-11-04 11:13	376.8	0.0737308	0.0647358	0.0030001
EARTH	2056-11-03 16:34	202.4	0.1377630	0.1244178	0.0044486
VENUS	2057-07-10 09:16	446.0	0.0398535	0.0328515	0.0034894
MERCURY	2060-06-12 16:49	> 1 d	0.0232913	0.0228830	0.0001377
EARTH	2064-01-26 05:18	228.5	0.0572484	0.0307076	0.0091239
EARTH	2067-01-14 22:35	> 1 d	0.1357494	0.1182031	0.0058528
MERCURY	2070-04-25 06:18	1260.3	0.0307450	0.0197706	0.0060832
EARTH	2072-11-15 18:30	923.4	0.1478613	0.1425021	0.0017864
EARTH	2075-11-02 11:44	86.0	0.0278778	0.0220789	0.0019452
MERCURY	2080-03-07 23:23	222.1	0.0497517	0.0459209	0.0012838
EARTH	2083-01-24 05:18	93.4	0.1432383	0.1355951	0.0025482
EARTH	2086-01-22 20:12	677.3	0.0824435	0.0695106	0.0043256
MERCURY	2090-01-25 14:11	> 1 d	0.0244009	0.0235196	0.0019476
EARTH	2091-11-20 23:06	> 1 d	0.1650012	0.1461434	0.0062881
EARTH	2094-11-02 04:54	50.6	0.0275287	0.0050028	0.0137219
EARTH	2102-01-26 13:37	548.8	0.0887037	0.0518512	0.0124197
MERCURY	2104-07-11 17:46	> 1 d	0.0243274	0.0237119	0.0030926
EARTH	2105-01-15 07:40	> 1 d	0.1388130	0.0961166	0.0142622
EARTH	2110-11-07 14:06	> 1 d	0.0907523	0.0133752	0.0260719
EARTH	2113-11-05 13:49	1389.4	0.1501153	0.0554642	0.0315892
MERCURY	2118-12-29 07:01	> 1 d	0.0346552	0.0103280	0.0164461
EARTH	2121-01-26 23:21	803.3	0.0276140	0.0136489	0.0247211
MERCURY	2123-07-18 11:48	> 1 d	0.0326235	0.0213252	0.0167416
EARTH	2123-12-27 12:51	> 1 d	0.1980792	0.1870196	0.0036889

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
116.75760411	297.95287832	0.00533083	MINIMUM
244.57481520	22.77447509	0.01419427	MINIMUM
180.60178600	340.26721099	0.20439370	SADDLE
1.38092160	161.16441391	0.54099147	SADDLE
1.33000747	341.10150047	1.45894400	SADDLE
180.56276735	160.25095317	2.20419565	MAXIMUM

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MOID Plots

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