Asteroids

2014LY21 help

Last update: 2025-02-16 15:01 UTC

Orbital Properties

Epoch

60600.0

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

0.00089

U parameter

9.0

Next Earth close approach

Date

2026-05-23

Nominal distance (from Earth center)

0.0486

7270571

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 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

60600.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.669004

1-sigma variation

2.466180

Unit

Eccentricity (e)

Value

0.561915

1-sigma variation

3.330220

Unit

Inclination (i)

Value

9.4491

1-sigma variation

170.8290

Unit

Long. of Ascending Node (Ω)

Value

72.8111

1-sigma variation

1.8896

Unit

Arg. of Perihelion (ω)

Value

347.5712

1-sigma variation

450.8330

Unit

Mean Anomaly (M)

Value

211.14706

1-sigma variation

13169.20000

Unit

Perihelion distance

Value

0.293081

1-sigma variation

Unit

Aphelion distance

Value

1.044928

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.689560

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.001757

1-sigma variation

Unit

MOID

Value

0.000888

1-sigma variation

Unit

Orbit Period

Value

199.8673

1-sigma variation

Unit

U parameter

Value

9.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.08204E0	-8.21292E0	4.21244E2	4.64132E0	-1.11183E3	-3.24777E4
e	-8.21292E0	1.10904E1	-5.68844E2	-6.26651E0	1.50137E3	4.38565E4
i	4.21244E2	-5.68844E2	2.91826E4	3.21008E2	-7.70043E4	-2.24942E6
Ω	4.64132E0	-6.26651E0	3.21008E2	3.57040E0	-8.48562E2	-2.47840E4
ω	-1.11183E3	1.50137E3	-7.70043E4	-8.48562E2	2.03250E5	5.93711E6
M	-3.24777E4	4.38565E4	-2.24942E6	-2.47840E4	5.93711E6	1.73429E8

Date of computation: 2024-12-09 13:46 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 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

4.506E-2

Unit

Source

[1]

Unobserved

Value

3912

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

[-]

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 2014LY21 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
VENUS	1958-12-17 23:14	> 1 mo	0.0337340	0.0185029	8917.4218126
EARTH	1960-06-07 16:16	> 1 mo	0.0516837	0.0000000	8863.0137782
EARTH	1961-05-20 07:06	> 1 mo	0.0219084	0.0002980	1716.6759687
EARTH	1962-05-07 13:05	> 1 mo	0.0960956	0.0000000	9168.1350582
VENUS	1964-05-07 09:45	> 1 mo	0.0486689	0.0312233	5091.2764519
MERCURY	1967-05-20 17:28	> 1 mo	0.0446797	0.0400130	2986.5955115
MERCURY	1970-06-16 02:17	> 1 mo	0.0458018	0.0390986	762.3758434
EARTH	1973-06-08 12:42	> 1 mo	0.1550005	0.0000000	922.4052720
EARTH	1974-06-03 10:00	> 1 mo	0.0007686	0.0003256	0.7052283
EARTH	1975-05-12 08:52	> 1 mo	0.0108019	0.0056786	7.1108826
VENUS	1975-07-29 03:56	> 1 mo	0.0318003	0.0127129	18.7729276
EARTH	1976-05-08 00:32	> 1 mo	0.1796371	0.0119901	15.0950959
VENUS	1982-05-03 20:52	> 1 mo	0.0314044	0.0107325	6.1794208
EARTH	1986-06-08 05:14	> 1 mo	0.1915165	0.0253486	3.9535434
EARTH	1987-06-06 07:22	> 1 mo	0.0176019	0.0019452	4.1658180
VENUS	1987-09-22 22:42	> 1 mo	0.0306018	0.0231418	4.5387995
EARTH	1988-05-14 12:29	> 1 mo	0.0098248	0.0075881	1.4757671
EARTH	1989-05-07 18:43	> 1 mo	0.1427107	0.0000000	8.0523887
MERCURY	1993-11-13 00:01	> 1 mo	0.0497202	0.0441567	8.8771595
MERCURY	1996-12-10 02:48	> 1 mo	0.0451894	0.0331492	23.1158956
VENUS	1998-12-13 12:49	> 1 mo	0.0186045	0.0107990	19.5060285
EARTH	2000-06-08 21:31	> 1 mo	0.1122382	0.0004864	20.5260906
MERCURY	2000-08-17 15:09	> 1 mo	0.0335063	0.0322435	0.5940784
EARTH	2001-05-29 08:40	> 1 mo	0.0184847	0.0005920	6.4158739
EARTH	2002-05-09 05:30	> 1 mo	0.0415462	0.0060907	16.9127237
MERCURY	2003-09-14 02:53	> 1 mo	0.0419063	0.0360531	17.5668427
VENUS	2004-05-03 03:43	> 1 mo	0.0433601	0.0212097	22.8686505
MERCURY	2010-07-01 02:18	> 1 mo	0.0385837	0.0336447	7.0768741
VENUS	2011-02-06 14:24	> 1 mo	0.0420334	0.0210184	7.3565938
EARTH	2013-06-08 17:26	> 1 w	0.1600334	0.0008209	2.2882827
MERCURY	2013-07-29 02:47	> 1 mo	0.0398946	0.0343800	1.7425004
EARTH	2014-06-03 17:38	1228.1	0.0001339	0.0000516	0.0000842
EARTH	2020-06-02 13:20	> 1 mo	0.0052052	0.0000000	10.0352829
EARTH	2026-05-23 05:02	> 1 mo	0.0486008	0.0157878	43.9808193
EARTH	2032-05-10 22:49	> 1 mo	0.0685183	0.0241525	71.1240223
MERCURY	2034-05-03 23:54	> 1 mo	0.0289388	0.0000000	713.7088373
EARTH	2037-06-07 15:46	> 1 mo	0.1563017	0.0000000	340.9434746
EARTH	2038-05-05 13:04	> 1 mo	0.1130665	0.0106156	243.8540384
MERCURY	2040-05-09 21:53	> 1 mo	0.0108081	0.0000000	492.3947286
VENUS	2040-10-14 01:01	> 1 mo	0.0481746	0.0000000	19.1049419
EARTH	2043-06-08 01:59	> 1 mo	0.0623601	0.0000000	414.0122513
EARTH	2044-05-04 21:55	> 1 mo	0.1939354	0.0079039	450.5219841
MERCURY	2046-05-16 06:29	> 1 mo	0.0137046	0.0022523	810.6315028
EARTH	2049-06-02 09:13	> 1 mo	0.0088509	0.0000000	363.4046826
MERCURY	2052-05-25 18:40	> 1 mo	0.0169589	0.0000000	831.3970240
EARTH	2055-05-15 21:50	> 1 mo	0.0610523	0.0367770	279.9129422
EARTH	2060-06-07 14:00	> 1 mo	0.1476573	0.0000000	2957.1209622
EARTH	2061-05-04 20:22	> 1 mo	0.1259421	0.0091184	2455.4956532
MERCURY	2062-03-27 10:03	> 1 mo	0.0266403	0.0000000	1609.3828397
EARTH	2066-06-05 02:05	> 1 mo	0.0116782	0.0000000	3496.5108848
MERCURY	2068-04-17 20:18	> 1 mo	0.0162514	0.0000000	3161.8901318
EARTH	2072-05-24 00:58	> 1 mo	0.0454279	0.0071127	2131.1560495
MERCURY	2074-04-27 01:18	> 1 mo	0.0329089	0.0000000	22918.2412119
EARTH	2078-05-10 12:49	> 1 mo	0.0707509	0.0204993	4743.5333208
EARTH	2083-06-08 17:25	> 1 mo	0.1274759	0.0000000	22198.0938132
EARTH	2084-05-04 17:13	> 1 mo	0.1363495	0.0071484	19374.4578370
EARTH	2089-06-05 21:50	> 1 mo	0.0232705	0.0000000	23766.4027622
EARTH	2095-05-28 17:40	> 1 mo	0.0340244	0.0000000	5338.4246520
EARTH	2101-05-15 15:51	> 1 mo	0.0609687	0.0327349	1754.7485128
EARTH	2106-06-08 21:51	> 1 mo	0.1748077	0.0000000	26143.5612113
EARTH	2107-05-07 14:50	> 1 mo	0.1014847	0.0095481	18212.0082358
EARTH	2112-06-08 18:04	> 1 mo	0.0690557	0.0000000	38800.8201127
EARTH	2113-05-06 09:26	> 1 mo	0.1883926	0.0055252	41481.5727228
EARTH	2118-06-03 17:59	> 1 mo	0.0093831	0.0000000	30525.0359096
EARTH	2124-05-16 13:15	> 1 mo	0.0593321	0.0367609	15951.7075261

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
203.22247894	150.46362141	0.00005640	MINIMUM
355.36733935	312.47047260	0.69477317	SADDLE
355.87000509	133.42669403	1.30472499	SADDLE
179.33698746	317.72021648	2.03154871	MAXIMUM

Download:

MOID Plots

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