Asteroids

2014LY21 help

Last update: 2024-05-01 23:55 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Aten

Perihelion (q)

0.293

Aphelion (Q)

1.045

Eccentricity (e)

0.562

Inclination (i)

9.4

deg

Orbit period (P)

199.9

Earth MOID

0.00006

U parameter

9.0

Next Earth close approach

Date

2026-05-23

Nominal distance (from Earth center)

0.04866

7279460

Maximum Brightness

24.2

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

28.9

mag

Diameter

4 - 10*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2014-06-02

Observatory

Mt. Lemmon Survey

Orbit Visualiser

Click the button to start Orbit Visualiser

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

60400.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.669026

1-sigma variation

2.215930

Unit

Eccentricity (e)

Value

0.561902

1-sigma variation

2.981750

Unit

Inclination (i)

Value

9.4491

1-sigma variation

152.6580

Unit

Long. of Ascending Node (Ω)

Value

72.8126

1-sigma variation

2.7987

Unit

Arg. of Perihelion (ω)

Value

347.5704

1-sigma variation

403.4150

Unit

Mean Anomaly (M)

Value

210.89596

1-sigma variation

10006.30000

Unit

Perihelion distance

Value

0.293098

1-sigma variation

Unit

Aphelion distance

Value

1.044953

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.689147

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.000112

1-sigma variation

Unit

MOID

Value

0.000056

1-sigma variation

Unit

Orbit Period

Value

199.8768

1-sigma variation

Unit

U parameter

Value

9.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.91035E0	-6.60734E0	3.38228E2	6.19039E0	-8.93940E2	-2.21732E4
e	-6.60734E0	8.89083E0	-4.55132E2	-8.32884E0	1.20288E3	2.98362E4
i	3.38228E2	-4.55132E2	2.33045E4	4.25948E2	-6.15735E4	-1.52731E6
Ω	6.19039E0	-8.32884E0	4.25948E2	7.83252E0	-1.12708E3	-2.79531E4
ω	-8.93940E2	1.20288E3	-6.15735E4	-1.12708E3	1.62744E5	4.03668E6
M	-2.21732E4	2.98362E4	-1.52731E6	-2.79531E4	4.03668E6	1.00126E8

Date of computation: 2024-04-23 10:08 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

28.885

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

4 - 10*

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 ODIM	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

4.506E-2

Unit

Source

[1]

Unobserved

Value

3622

Unit

Source

[1]

Normalized RMS of residuals

Value

0.537186

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2014-06-02.41612

Unit

Source

[2]

Last Observation

Value

2014-06-02.46118

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

11 (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

[3]

Last Observation

Value

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[1]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA ODIM	ESA orbit determination and impact monitoring system
[2]	MPC	Minor Planet Center: https://www.minorplanetcenter.net
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

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 2014LY21 from 1950 to 2124

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possibile distance in au	Distance uncert. in au
MERCURY	1950-10-07 16:02	> 1 mo	0.0431667	0.0385870	9265.9712321
MERCURY	1953-11-03 19:56	> 1 mo	0.0457846	0.0399765	3828.0595193
VENUS	1958-12-17 15:15	> 1 mo	0.0268766	0.0183715	197.1422640
EARTH	1960-06-08 02:26	> 1 mo	0.0641684	0.0000000	8652.5817485
EARTH	1961-05-22 04:26	> 1 mo	0.0236022	0.0052868	699.4541035
EARTH	1962-05-07 15:04	> 1 mo	0.0837897	0.0000000	8147.6374667
VENUS	1964-05-07 01:54	> 1 mo	0.0439549	0.0312328	1602.6822435
MERCURY	1967-05-18 07:22	> 1 mo	0.0487850	0.0454127	2540.5719546
MERCURY	1970-06-15 06:56	> 1 mo	0.0475563	0.0390835	1639.9349041
EARTH	1973-06-08 11:59	> 1 mo	0.1562368	0.0000000	816.4719996
EARTH	1974-06-03 10:03	> 1 mo	0.0007696	0.0003271	0.7295746
EARTH	1975-05-12 08:54	> 1 mo	0.0107924	0.0056780	6.3078585
VENUS	1975-07-29 03:55	> 1 mo	0.0317750	0.0126989	16.6693159
EARTH	1976-05-08 00:31	> 1 mo	0.1796168	0.0120161	13.4165999
VENUS	1982-05-03 20:51	> 1 mo	0.0314130	0.0107854	5.5834038
EARTH	1986-06-08 05:14	> 1 mo	0.1915115	0.0257981	3.4041695
EARTH	1987-06-06 07:21	> 1 mo	0.0175966	0.0019615	3.6256405
VENUS	1987-09-22 22:43	> 1 mo	0.0306075	0.0231695	3.9380558
EARTH	1988-05-14 12:27	> 1 mo	0.0098229	0.0076161	1.2779739
EARTH	1989-05-07 18:43	> 1 mo	0.1427212	0.0000110	7.0580163
MERCURY	1993-11-13 00:10	> 1 mo	0.0497084	0.0441371	7.8689506
MERCURY	1996-12-10 02:52	> 1 mo	0.0451584	0.0331477	20.5128147
VENUS	1998-12-13 12:50	> 1 mo	0.0186308	0.0107991	17.3745919
EARTH	2000-06-08 21:31	> 1 mo	0.1122106	0.0004867	18.2562064
MERCURY	2000-08-17 15:17	> 1 mo	0.0335055	0.0322431	0.4521520
EARTH	2001-05-29 08:35	> 1 mo	0.0184933	0.0005933	5.7023577
EARTH	2002-05-09 05:28	> 1 mo	0.0415690	0.0060911	15.0436639
MERCURY	2003-09-14 03:05	> 1 mo	0.0419299	0.0360693	15.6236943
VENUS	2004-05-03 03:44	> 1 mo	0.0433909	0.0212097	20.3455443
MERCURY	2010-07-01 02:22	> 1 mo	0.0385741	0.0336404	6.2918307
VENUS	2011-02-06 14:24	> 1 mo	0.0420234	0.0210184	6.5420736
EARTH	2013-06-08 17:26	> 1 w	0.1600303	0.0008210	2.0351289
MERCURY	2013-07-29 02:48	> 1 mo	0.0398969	0.0343807	1.5498357
EARTH	2014-06-03 17:38	1096.9	0.0001339	0.0000517	0.0000775
EARTH	2020-06-02 13:23	> 1 mo	0.0051917	0.0000000	8.9254967
EARTH	2026-05-23 04:23	> 1 mo	0.0486602	0.0159878	39.2774815
EARTH	2032-05-10 21:54	> 1 mo	0.0686147	0.0240561	64.0462221
MERCURY	2034-05-04 01:08	> 1 mo	0.0299064	0.0000000	642.4958617
EARTH	2037-06-07 15:56	> 1 mo	0.1558387	0.0000000	308.2240882
EARTH	2038-05-05 12:45	> 1 mo	0.1133984	0.0105743	221.5059255
MERCURY	2040-05-09 23:58	> 1 mo	0.0115166	0.0000000	497.7522774
VENUS	2040-10-14 01:18	> 1 mo	0.0482050	0.0000000	23.2789006
EARTH	2043-06-08 01:37	> 1 mo	0.0618273	0.0000000	338.2493465
EARTH	2044-05-04 22:07	> 1 mo	0.1945110	0.0079579	362.9770074
MERCURY	2046-05-16 11:30	> 1 mo	0.0127151	0.0014078	594.1767696
EARTH	2049-06-02 07:37	> 1 mo	0.0092954	0.0000000	269.6184525
MERCURY	2052-05-25 17:12	> 1 mo	0.0160609	0.0000000	473.6937712
EARTH	2055-05-16 02:52	> 1 mo	0.0607299	0.0373778	183.4812525
EARTH	2060-06-07 12:55	> 1 mo	0.1511040	0.0000000	1988.7788173
EARTH	2061-05-04 22:05	> 1 mo	0.1231066	0.0092609	1621.0218749
MERCURY	2062-03-25 19:20	> 1 mo	0.0248755	0.0000000	821.9948885
EARTH	2066-06-05 11:09	> 1 mo	0.0159190	0.0000000	2546.2633141
MERCURY	2068-04-17 07:22	> 1 mo	0.0108870	0.0000000	3297.2603926
EARTH	2072-05-23 11:57	> 1 mo	0.0467734	0.0055703	80.7729798
MERCURY	2074-04-27 19:22	> 1 mo	0.0496449	0.0000000	2870.3787167
EARTH	2078-05-09 09:55	> 1 mo	0.0750445	0.0186119	1314.2788582
VENUS	2080-10-09 16:09	> 1 mo	0.0497455	0.0000000	907.3922897
EARTH	2083-06-08 18:57	> 1 mo	0.1074526	0.0000000	6341.3219219
MERCURY	2084-02-19 12:07	> 1 mo	0.0427860	0.0000000	11479.5132512
EARTH	2084-05-04 14:50	> 1 mo	0.1548181	0.0067918	6245.2125791
EARTH	2089-06-03 22:41	> 1 mo	0.0030271	0.0018368	4756.0613825
MERCURY	2090-02-27 13:18	> 1 mo	0.0286209	0.0000000	9626.4611797
EARTH	2095-06-03 22:06	> 1 mo	0.0030193	0.0007464	4343.4065996
VENUS	2095-07-16 09:13	> 1 mo	0.0461146	0.0252754	2429.5535813
MERCURY	2098-05-13 00:49	> 1 mo	0.0256999	0.0082327	11572.3013419
EARTH	2101-05-22 02:14	> 1 mo	0.0504069	0.0366411	6197.6717620
MERCURY	2104-05-27 01:08	> 1 mo	0.0275277	0.0096784	16005.9039008
EARTH	2107-05-09 06:46	> 1 mo	0.0752979	0.0412925	17302.3643802
MERCURY	2110-06-11 06:38	> 1 mo	0.0090004	0.0036649	15728.1418550
EARTH	2112-06-09 00:38	> 1 mo	0.0955878	0.0044766	80025.3556415
EARTH	2113-05-05 12:24	> 1 mo	0.1595179	0.0459529	85003.3717328
MERCURY	2116-06-21 01:23	> 1 mo	0.0390882	0.0000000	345271.4699397
EARTH	2118-06-04 12:49	> 1 mo	0.0045012	0.0000000	88143.0526561
EARTH	2124-05-10 21:46	> 1 mo	0.0652904	0.0402076	69130.1879429

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