Asteroids

2023BK17 help

Last update: 2025-07-29 02:36 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Aten

Perihelion (q)

0.179

Aphelion (Q)

1.064

Eccentricity (e)

0.712

Inclination (i)

4.6

deg

Orbit period (P)

178.9

Earth MOID

0.03443

U parameter

9.0

Next Earth close approach

Date

2026-02-15

Nominal distance (from Earth center)

0.06525

9761686

Maximum Brightness

22.2

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

2023-01-29

Observatory

Mt. Lemmon 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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.621328

1-sigma variation

0.008008

Unit

Eccentricity (e)

Value

0.712265

1-sigma variation

0.031556

Unit

Inclination (i)

Value

4.5640

1-sigma variation

0.7072

Unit

Long. of Ascending Node (Ω)

Value

91.4790

1-sigma variation

4.1118

Unit

Arg. of Perihelion (ω)

Value

220.9785

1-sigma variation

4.1209

Unit

Mean Anomaly (M)

Value

21.23390

1-sigma variation

30.30820

Unit

Perihelion distance

Value

0.178778

1-sigma variation

Unit

Aphelion distance

Value

1.063879

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.322384

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.816879

1-sigma variation

Unit

MOID

Value

0.034427

1-sigma variation

Unit

Orbit Period

Value

178.8875

1-sigma variation

Unit

U parameter

Value

9.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.41350E-5	-2.52711E-4	-5.64434E-3	-3.26279E-2	3.27453E-2	-2.42718E-1
e	-2.52711E-4	9.95790E-4	2.22508E-2	1.28664E-1	-1.29119E-1	9.56348E-1
i	-5.64434E-3	2.22508E-2	5.00072E-1	2.90353E0	-2.91143E0	2.13510E1
Ω	-3.26279E-2	1.28664E-1	2.90353E0	1.69073E1	-1.69436E1	1.23384E2
ω	3.27453E-2	-1.29119E-1	-2.91143E0	-1.69436E1	1.69819E1	-1.23836E2
M	-2.42718E-1	9.56348E-1	2.13510E1	1.23384E2	-1.23836E2	9.18589E2

Date of computation: 2025-07-29 02:36 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

24.902

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

[-]

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

944

Unit

Source

[1]

Normalized RMS of residuals

Value

0.387844

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2023-01-29.224718

Unit

Source

[2]

Last Observation

Value

2023-01-30.396091

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

10 (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 2023BK17 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	1950-01-16 10:12	> 1 w	0.1042795	0.0292011	1.8215278
EARTH	1951-01-17 06:32	> 1 mo	0.0331575	0.0315348	0.3721450
EARTH	1952-01-22 17:20	> 1 mo	0.0668848	0.0306015	0.7396677
EARTH	1953-01-30 19:11	> 1 mo	0.0936952	0.0349486	0.1375761
EARTH	1954-02-09 03:23	> 1 mo	0.0841107	0.0657916	0.3404161
EARTH	1955-02-15 10:19	> 1 mo	0.0649143	0.0635419	0.0307163
MERCURY	1955-04-25 18:56	> 1 mo	0.0327722	0.0160091	2.7669901
EARTH	1956-02-17 01:30	> 1 w	0.1095038	0.0656112	0.8783431
EARTH	1957-02-14 11:59	> 1 mo	0.1973692	0.0682490	1.0099443
VENUS	1958-02-22 09:59	> 1 w	0.0162607	0.0127357	0.5653163
MERCURY	1963-08-01 18:26	> 1 mo	0.0170424	0.0074847	1.6685874
VENUS	1969-02-03 19:25	> 1 w	0.0289698	0.0102010	1.1891539
MERCURY	1970-01-03 02:58	> 1 mo	0.0408579	0.0157768	1.9193455
EARTH	1973-01-18 03:42	> 1 w	0.1889992	0.0316392	0.5772174
EARTH	1974-01-16 09:42	> 1 d	0.0913846	0.0319668	0.4110329
EARTH	1975-01-17 19:32	> 1 w	0.0331003	0.0324349	0.0254927
EARTH	1976-01-23 22:01	> 1 w	0.0730414	0.0323248	0.1061159
EARTH	1977-02-01 05:44	> 1 w	0.0946599	0.0461533	0.0238723
EARTH	1978-02-10 08:56	388.1	0.0807385	0.0744056	0.0126481
MERCURY	1978-04-11 00:41	> 1 d	0.0129306	0.0047410	0.0674288
EARTH	1979-02-16 00:39	> 1 d	0.0661856	0.0614791	0.0379188
EARTH	1980-02-17 02:09	> 1 d	0.1204776	0.0569950	0.2068184
VENUS	1982-02-20 04:35	> 1 w	0.0397665	0.0134923	0.5426713
VENUS	1984-08-05 11:15	> 1 w	0.0432760	0.0113544	0.8438983
MERCURY	1984-09-12 08:52	> 1 mo	0.0453941	0.0157885	1.4055347
MERCURY	1992-12-18 19:14	> 1 mo	0.0234601	0.0066282	1.8176904
VENUS	1993-02-01 09:14	> 1 w	0.0153517	0.0092045	0.9803411
MERCURY	1993-06-14 19:12	> 1 mo	0.0486719	0.0068287	1.9384357
EARTH	1997-01-17 08:47	> 1 w	0.1546297	0.0283411	1.0536560
EARTH	1998-01-16 11:41	> 1 d	0.0612691	0.0314611	0.8177434
EARTH	1999-01-19 14:57	> 1 mo	0.0454206	0.0335428	0.4573136
MERCURY	1999-05-22 07:01	> 1 mo	0.0198336	0.0152660	1.4341228
EARTH	2000-01-27 12:52	> 1 mo	0.0863780	0.0220989	0.2460418
EARTH	2001-02-05 09:48	> 1 mo	0.0923341	0.0713441	0.1619481
EARTH	2002-02-13 12:49	> 1 mo	0.0691326	0.0632470	0.2510928
EARTH	2003-02-17 00:06	> 1 w	0.0839899	0.0645797	0.5949277
EARTH	2004-02-16 09:03	> 1 w	0.1639689	0.0664674	0.9783843
VENUS	2006-02-17 03:23	> 1 w	0.0196572	0.0119304	1.0010872
MERCURY	2008-02-21 06:40	> 1 mo	0.0104802	0.0064209	1.2197030
MERCURY	2014-07-24 20:42	> 1 mo	0.0195755	0.0149622	1.0533366
VENUS	2014-08-15 19:53	> 1 w	0.0350193	0.0084014	0.9706260
VENUS	2017-01-29 04:30	> 1 w	0.0476728	0.0087008	0.7187782
EARTH	2020-01-19 09:31	> 1 w	0.1978569	0.0309222	0.2831003
EARTH	2021-01-16 11:01	> 1 d	0.0988780	0.0321018	0.1674719
EARTH	2022-01-17 13:40	> 1 d	0.0343267	0.0335554	0.0063968
MERCURY	2022-10-30 11:27	> 1 d	0.0404035	0.0073619	0.1088827
EARTH	2023-01-23 09:23	48.5	0.0709417	0.0611281	0.0032712
MERCURY	2023-04-26 12:21	870.2	0.0331582	0.0035201	0.0268443
EARTH	2024-02-01 15:38	> 1 w	0.0947933	0.0644489	0.0109002
EARTH	2025-02-09 22:33	> 1 w	0.0824136	0.0699332	0.0360330
EARTH	2026-02-15 20:47	> 1 w	0.0652528	0.0629722	0.0333377
EARTH	2027-02-17 03:28	> 1 d	0.1157950	0.0619481	0.2751049
MERCURY	2029-04-02 16:55	> 1 mo	0.0158269	0.0144650	0.1318583
VENUS	2030-02-14 09:22	> 1 w	0.0162767	0.0114680	0.4919572
MERCURY	2037-07-09 14:29	> 1 mo	0.0397609	0.0057648	3.1770149
MERCURY	2038-01-03 15:28	> 1 mo	0.0336695	0.0056899	3.2927577
VENUS	2041-01-26 18:40	> 1 mo	0.0255725	0.0076776	2.6046169
MERCURY	2043-12-11 22:35	> 1 mo	0.0160709	0.0143975	0.9338326
EARTH	2044-01-18 23:19	> 1 mo	0.1794779	0.0328844	1.8181889
EARTH	2045-01-16 10:30	> 1 d	0.0835624	0.0337832	1.4908290
EARTH	2046-01-18 06:09	> 1 mo	0.0364696	0.0341931	0.3666558
EARTH	2047-01-24 20:20	> 1 mo	0.0777257	0.0278026	0.5901942
EARTH	2048-02-03 08:05	> 1 mo	0.0953156	0.0948292	0.0004473
EARTH	2049-02-11 07:08	> 1 mo	0.0781671	0.0655373	0.3781030
EARTH	2050-02-16 10:54	> 1 mo	0.0680724	0.0631895	0.3594280
EARTH	2051-02-17 02:22	> 1 w	0.1289259	0.0635860	1.1146478
MERCURY	2052-03-18 20:53	> 1 mo	0.0345448	0.0052915	2.2731162
MERCURY	2052-09-12 21:43	> 1 mo	0.0381427	0.0051064	2.2436014
VENUS	2054-02-12 02:46	> 1 w	0.0391791	0.0108919	1.4179297
VENUS	2056-07-28 09:09	> 1 w	0.0434373	0.0108852	1.1126200
MERCURY	2058-08-20 22:57	> 1 mo	0.0153130	0.0139286	0.1513125
VENUS	2065-01-24 06:38	> 1 d	0.0154883	0.0064882	0.2343303
MERCURY	2067-05-23 02:59	> 1 w	0.0102912	0.0053417	0.6673910
EARTH	2068-01-18 04:34	> 1 w	0.1431889	0.0293333	0.4920206
EARTH	2069-01-16 15:59	> 1 d	0.0536598	0.0334557	0.4028283
EARTH	2070-01-20 09:26	> 1 mo	0.0523491	0.0353837	0.3013851
EARTH	2071-01-28 18:15	> 1 mo	0.0898935	0.0152623	0.1347572
EARTH	2072-02-07 14:40	> 1 mo	0.0910743	0.0681009	0.1792154
EARTH	2073-02-14 07:16	> 1 mo	0.0668017	0.0631978	0.1863325
MERCURY	2073-10-23 18:48	> 1 mo	0.0357947	0.0137819	2.2720305
EARTH	2074-02-17 05:06	> 1 d	0.0904175	0.0642210	0.6829298
EARTH	2075-02-16 05:55	> 1 w	0.1741383	0.0654940	1.0863818
VENUS	2078-02-09 00:34	> 1 mo	0.0168988	0.0105634	1.2503522
MERCURY	2082-01-28 19:31	> 1 mo	0.0423638	0.0048603	3.0686574
MERCURY	2082-07-25 19:13	> 1 mo	0.0291712	0.0046580	3.1127263
VENUS	2086-08-07 19:43	> 1 mo	0.0371076	0.0057632	2.4158147
MERCURY	2088-07-01 17:11	> 1 mo	0.0251503	0.0135850	3.3623324
VENUS	2089-01-21 03:40	> 1 w	0.0430224	0.0065221	2.1438473
EARTH	2091-01-19 06:27	> 1 mo	0.1910866	0.0355839	1.4045420
EARTH	2092-01-17 11:41	> 1 w	0.0934813	0.0357649	1.0988329
EARTH	2093-01-17 20:41	> 1 mo	0.0362868	0.0353591	0.0825466
EARTH	2094-01-23 23:24	> 1 mo	0.0744541	0.0284410	0.3932124
EARTH	2095-02-02 09:16	> 1 mo	0.0956034	0.0898528	0.0284598
EARTH	2096-02-11 13:32	> 1 mo	0.0810295	0.0671655	0.1882189
EARTH	2097-02-16 04:42	> 1 w	0.0657711	0.0629212	0.1089480
MERCURY	2097-04-03 13:24	> 1 mo	0.0171699	0.0041704	1.0406743
EARTH	2098-02-17 05:04	> 1 d	0.1205840	0.0623610	0.3970038
VENUS	2102-02-07 10:09	> 1 d	0.0198566	0.0104506	0.0522897
MERCURY	2103-03-12 16:33	> 1 w	0.0303497	0.0125340	0.5068229
MERCURY	2111-12-13 18:56	> 1 mo	0.0203484	0.0042422	2.1632634
VENUS	2113-01-19 19:49	> 1 w	0.0173197	0.0052259	1.6471301
EARTH	2115-01-19 20:33	> 1 w	0.1728726	0.0294632	1.0850838
EARTH	2116-01-18 11:55	> 1 d	0.0779589	0.0328344	0.7877346
EARTH	2117-01-19 16:22	> 1 mo	0.0404088	0.0370837	0.2049930
MERCURY	2117-11-19 21:37	> 1 mo	0.0271034	0.0128592	1.2760268
EARTH	2118-01-26 16:36	> 1 mo	0.0815424	0.0417730	0.2009682
EARTH	2119-02-05 09:56	> 1 mo	0.0953422	0.0525151	0.0170363
EARTH	2120-02-14 04:22	> 1 w	0.0752555	0.0539098	0.0843557
EARTH	2121-02-17 19:34	> 1 d	0.0714437	0.0705911	0.0072677
EARTH	2122-02-18 00:07	> 1 d	0.1397997	0.0086303	0.0627310

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
144.01826572	14.74446070	0.03442702	MINIMUM
213.28275408	43.46133424	0.06463952	MINIMUM
181.79948777	30.42676987	0.09485884	SADDLE
357.81203436	207.22822149	0.83576549	SADDLE
357.82347539	27.18287402	1.16420087	SADDLE
179.48101777	209.47707279	2.07728737	MAXIMUM

Download:

MOID Plots

Click on the images to zoom-in and zoom-out