Asteroids

2023BK17 help

Last update: 2026-03-17 23:26 UTC

Orbital Properties

Epoch

61200.0

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

0.03448

U parameter

9.0

Next Earth close approach

Date

2027-02-17

Nominal distance (from Earth center)

0.1158

17322686

Maximum Brightness

24.8

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

61200.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.621304

1-sigma variation

0.008216

Unit

Eccentricity (e)

Value

0.712345

1-sigma variation

0.031764

Unit

Inclination (i)

Value

4.5550

1-sigma variation

0.7217

Unit

Long. of Ascending Node (Ω)

Value

91.3100

1-sigma variation

4.3502

Unit

Arg. of Perihelion (ω)

Value

221.1493

1-sigma variation

4.3253

Unit

Mean Anomaly (M)

Value

106.21156

1-sigma variation

45.91800

Unit

Perihelion distance

Value

0.178721

1-sigma variation

Unit

Aphelion distance

Value

1.063886

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.324241

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.817169

1-sigma variation

Unit

MOID

Value

0.034482

1-sigma variation

Unit

Orbit Period

Value

178.8769

1-sigma variation

Unit

U parameter

Value

9.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.75011E-5	-2.60964E-4	-5.91067E-3	-3.54440E-2	3.52812E-2	-3.77256E-1
e	-2.60964E-4	1.00894E-3	2.28616E-2	1.37132E-1	-1.36494E-1	1.45846E0
i	-5.91067E-3	2.28616E-2	5.20888E-1	3.13589E0	-3.11920E0	3.30243E1
Ω	-3.54440E-2	1.37132E-1	3.13589E0	1.89242E1	-1.88151E1	1.97999E2
ω	3.52812E-2	-1.36494E-1	-3.11920E0	-1.88151E1	1.87082E1	-1.97096E2
M	-3.77256E-1	1.45846E0	3.30243E1	1.97999E2	-1.97096E2	2.10847E3

Date of computation: 2026-03-17 23:26 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

24.903

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

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

1175

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

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 2023BK17 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	1950-01-16 10:12	> 1 w	0.1042795	0.0292011	1.8215315
EARTH	1951-01-17 06:32	> 1 mo	0.0331575	0.0315348	0.3721457
EARTH	1952-01-22 17:20	> 1 mo	0.0668848	0.0306015	0.7396692
EARTH	1953-01-30 19:11	> 1 mo	0.0936952	0.0349486	0.1375764
EARTH	1954-02-09 03:23	> 1 mo	0.0841107	0.0657916	0.3404168
EARTH	1955-02-15 10:19	> 1 mo	0.0649143	0.0635419	0.0307164
MERCURY	1955-04-25 18:56	> 1 mo	0.0327722	0.0160091	2.7669955
EARTH	1956-02-17 01:30	> 1 w	0.1095038	0.0656112	0.8783448
EARTH	1957-02-14 11:59	> 1 mo	0.1973692	0.0682490	1.0099462
VENUS	1958-02-22 09:59	> 1 w	0.0162607	0.0127357	0.5653173
MERCURY	1963-08-01 18:26	> 1 mo	0.0170424	0.0074847	1.6685905
VENUS	1969-02-03 19:25	> 1 w	0.0289698	0.0102010	1.1891561
MERCURY	1970-01-03 02:58	> 1 mo	0.0408579	0.0157768	1.9193491
EARTH	1973-01-18 03:42	> 1 w	0.1889992	0.0316392	0.5772184
EARTH	1974-01-16 09:42	> 1 d	0.0913846	0.0319668	0.4110336
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	0.1061161
EARTH	1977-02-01 05:44	> 1 w	0.0946599	0.0461533	0.0238724
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	0.0674291
EARTH	1979-02-16 00:39	> 1 d	0.0661856	0.0614791	0.0379189
EARTH	1980-02-17 02:09	> 1 d	0.1204776	0.0569950	0.2068189
VENUS	1982-02-20 04:35	> 1 w	0.0397665	0.0134923	0.5426725
VENUS	1984-08-05 11:15	> 1 w	0.0432760	0.0113544	0.8439001
MERCURY	1984-09-12 08:52	> 1 mo	0.0453941	0.0157885	1.4055376
MERCURY	1992-12-18 19:14	> 1 mo	0.0234601	0.0066282	1.8176939
VENUS	1993-02-01 09:14	> 1 w	0.0153517	0.0092045	0.9803430
MERCURY	1993-06-14 19:12	> 1 mo	0.0486719	0.0068287	1.9384395
EARTH	1997-01-17 08:47	> 1 w	0.1546297	0.0283411	1.0536580
EARTH	1998-01-16 11:41	> 1 d	0.0612691	0.0314611	0.8177450
EARTH	1999-01-19 14:57	> 1 mo	0.0454206	0.0335428	0.4573145
MERCURY	1999-05-22 07:01	> 1 mo	0.0198336	0.0152660	1.4341256
EARTH	2000-01-27 12:52	> 1 mo	0.0863780	0.0220989	0.2460422
EARTH	2001-02-05 09:48	> 1 mo	0.0923341	0.0713441	0.1619484
EARTH	2002-02-13 12:49	> 1 mo	0.0691326	0.0632470	0.2510933
EARTH	2003-02-17 00:06	> 1 w	0.0839899	0.0645797	0.5949289
EARTH	2004-02-16 09:03	> 1 w	0.1639689	0.0664674	0.9783863
VENUS	2006-02-17 03:23	> 1 w	0.0196572	0.0119304	1.0010892
MERCURY	2008-02-21 06:40	> 1 mo	0.0104802	0.0064209	1.2197054
MERCURY	2014-07-24 20:42	> 1 mo	0.0195755	0.0149622	1.0533387
VENUS	2014-08-15 19:53	> 1 w	0.0350193	0.0084014	0.9706279
VENUS	2017-01-29 04:30	> 1 w	0.0476728	0.0087008	0.7187796
EARTH	2020-01-19 09:31	> 1 w	0.1978569	0.0309222	0.2831008
EARTH	2021-01-16 11:01	> 1 d	0.0988780	0.0321018	0.1674722
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	0.1088830
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	0.0268444
EARTH	2024-02-01 15:38	> 1 w	0.0947933	0.0644488	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	0.0333378
EARTH	2027-02-17 03:28	> 1 d	0.1157950	0.0619481	0.2751054
MERCURY	2029-04-02 16:55	> 1 mo	0.0158269	0.0144650	0.1318586
VENUS	2030-02-14 09:22	> 1 w	0.0162767	0.0114680	0.4919582
MERCURY	2037-07-09 14:29	> 1 mo	0.0397609	0.0057648	3.1770212
MERCURY	2038-01-03 15:28	> 1 mo	0.0336695	0.0056899	3.2927642
VENUS	2041-01-26 18:40	> 1 mo	0.0255725	0.0076776	2.6046221
MERCURY	2043-12-11 22:35	> 1 mo	0.0160709	0.0143975	0.9338342
EARTH	2044-01-18 23:19	> 1 mo	0.1794779	0.0328844	1.8181925
EARTH	2045-01-16 10:30	> 1 d	0.0835624	0.0337832	1.4908320
EARTH	2046-01-18 06:09	> 1 mo	0.0364696	0.0341931	0.3666565
EARTH	2047-01-24 20:20	> 1 mo	0.0777257	0.0278026	0.5901954
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	0.3781037
EARTH	2050-02-16 10:54	> 1 mo	0.0680724	0.0631895	0.3594288
EARTH	2051-02-17 02:22	> 1 w	0.1289259	0.0635860	1.1146500
MERCURY	2052-03-18 20:53	> 1 mo	0.0345448	0.0052915	2.2731208
MERCURY	2052-09-12 21:43	> 1 mo	0.0381427	0.0051064	2.2436060
VENUS	2054-02-12 02:46	> 1 w	0.0391791	0.0108919	1.4179326
VENUS	2056-07-28 09:09	> 1 w	0.0434373	0.0108852	1.1126224
MERCURY	2058-08-20 22:57	> 1 mo	0.0153130	0.0139286	0.1513129
VENUS	2065-01-24 06:38	> 1 d	0.0154883	0.0064882	0.2343306
MERCURY	2067-05-23 02:59	> 1 w	0.0102912	0.0053417	0.6673922
EARTH	2068-01-18 04:34	> 1 w	0.1431889	0.0293333	0.4920215
EARTH	2069-01-16 15:59	> 1 d	0.0536598	0.0334557	0.4028291
EARTH	2070-01-20 09:26	> 1 mo	0.0523491	0.0353837	0.3013857
EARTH	2071-01-28 18:15	> 1 mo	0.0898935	0.0152623	0.1347574
EARTH	2072-02-07 14:40	> 1 mo	0.0910743	0.0681009	0.1792158
EARTH	2073-02-14 07:16	> 1 mo	0.0668017	0.0631978	0.1863329
MERCURY	2073-10-23 18:48	> 1 mo	0.0357947	0.0137819	2.2720350
EARTH	2074-02-17 05:06	> 1 d	0.0904175	0.0642210	0.6829312
EARTH	2075-02-16 05:55	> 1 w	0.1741383	0.0654940	1.0863840
VENUS	2078-02-09 00:34	> 1 mo	0.0168988	0.0105634	1.2503548
MERCURY	2082-01-28 19:31	> 1 mo	0.0423638	0.0048603	3.0686636
MERCURY	2082-07-25 19:13	> 1 mo	0.0291712	0.0046580	3.1127326
VENUS	2086-08-07 19:43	> 1 mo	0.0371076	0.0057632	2.4158196
MERCURY	2088-07-01 17:11	> 1 mo	0.0251503	0.0135850	3.3623392
VENUS	2089-01-21 03:40	> 1 w	0.0430224	0.0065221	2.1438516
EARTH	2091-01-19 06:27	> 1 mo	0.1910866	0.0355839	1.4045448
EARTH	2092-01-17 11:41	> 1 w	0.0934813	0.0357649	1.0988352
EARTH	2093-01-17 20:41	> 1 mo	0.0362868	0.0353591	0.0825467
EARTH	2094-01-23 23:24	> 1 mo	0.0744541	0.0284410	0.3932132
EARTH	2095-02-02 09:16	> 1 mo	0.0956034	0.0898528	0.0284599
EARTH	2096-02-11 13:32	> 1 mo	0.0810295	0.0671655	0.1882193
EARTH	2097-02-16 04:42	> 1 w	0.0657711	0.0629212	0.1089482
MERCURY	2097-04-03 13:24	> 1 mo	0.0171699	0.0041704	1.0406765
EARTH	2098-02-17 05:04	> 1 d	0.1205840	0.0623610	0.3970046
VENUS	2102-02-07 10:09	> 1 d	0.0198566	0.0104506	0.0522898
MERCURY	2103-03-12 16:33	> 1 w	0.0303497	0.0125340	0.5068239
MERCURY	2111-12-13 18:56	> 1 mo	0.0203484	0.0042422	2.1632677
VENUS	2113-01-19 19:49	> 1 w	0.0173197	0.0052259	1.6471335
EARTH	2115-01-19 20:33	> 1 w	0.1728726	0.0294632	1.0850860
EARTH	2116-01-18 11:55	> 1 d	0.0779589	0.0328344	0.7877362
EARTH	2117-01-19 16:22	> 1 mo	0.0404088	0.0370837	0.2049934
MERCURY	2117-11-19 21:37	> 1 mo	0.0271034	0.0128592	1.2760295
EARTH	2118-01-26 16:36	> 1 mo	0.0815424	0.0417730	0.2009686
EARTH	2119-02-05 09:56	> 1 mo	0.0953422	0.0525150	0.0170363
EARTH	2120-02-14 04:22	> 1 w	0.0752555	0.0539098	0.0843559
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	0.0627311
VENUS	2126-02-04 21:50	> 1 w	0.0308059	0.0099842	0.8101659
MERCURY	2126-08-22 04:15	> 1 mo	0.0070043	0.0036749	0.8890457

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
144.01525149	15.64461246	0.03439681	MINIMUM
213.20230120	44.30662806	0.06460324	MINIMUM
181.76603977	31.30477088	0.09471974	SADDLE
357.61056510	207.87072613	0.83739488	SADDLE
357.63124476	27.83911609	1.16432137	SADDLE
179.44248314	210.35196574	2.07889837	MAXIMUM

Download:

MOID Plots

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