Asteroids

357024 1999YR14 help

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

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.991

Aphelion (Q)

2.312

Eccentricity (e)

0.400

Inclination (i)

3.7

deg

Orbit period (P)

775.1

Earth MOID

0.00712

U parameter

0.0

Next Earth close approach

Date

2033-08-17

Nominal distance (from Earth center)

0.18723

28009930

Maximum Brightness

18.4

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

19.4

mag

Diameter

200

Taxonomic type

Rotation period (T)

4.246

Discovery Information

Discovery Date

1999-12-31

Observatory

Lowell Observatory-LONEOS

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

1.651321

1-sigma variation

3.587E-9

Unit

Eccentricity (e)

Value

0.400097

1-sigma variation

7.446E-9

Unit

Inclination (i)

Value

3.7260

1-sigma variation

2.284E-6

Unit

Long. of Ascending Node (Ω)

Value

2.9691

1-sigma variation

2.395E-5

Unit

Arg. of Perihelion (ω)

Value

9.7114

1-sigma variation

2.387E-5

Unit

Mean Anomaly (M)

Value

111.51513

1-sigma variation

4.978E-6

Unit

Perihelion distance

Value

0.990632

1-sigma variation

Unit

Aphelion distance

Value

2.312011

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.008360

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

1.292034

1-sigma variation

Unit

MOID

Value

0.007124

1-sigma variation

Unit

Orbit Period

Value

775.0787

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.28668E-17	2.02906E-18	5.37826E-16	-2.22806E-15	2.86334E-16	-1.71904E-14
e	2.02906E-18	5.54475E-17	-2.74802E-15	1.24817E-13	-1.11479E-13	-7.54450E-15
i	5.37826E-16	-2.74802E-15	5.21776E-12	-2.99012E-11	2.64476E-11	6.51690E-13
Ω	-2.22806E-15	1.24817E-13	-2.99012E-11	5.73838E-10	-5.65574E-10	4.13649E-13
ω	2.86334E-16	-1.11479E-13	2.64476E-11	-5.65574E-10	5.70002E-10	-2.55099E-12
M	-1.71904E-14	-7.54450E-15	6.51690E-13	4.13649E-13	-2.55099E-12	2.47780E-11

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

4.246

Unit

Source

[3]

Quality

Value

Unit

Source

[3]

Amplitude

Value

1.19-1.38

Unit

mag

Source

[3]

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

[1]

Taxonomy (all)

Value

Unit

Source

[2]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

19.373

Unit

mag

Source

[4]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[4]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.4305

Unit

Source

[5]

Diameter

Value

200

Unit

Source

[5]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Unit

Source

[6]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Michaël Marsset et al 2022 AJ 163 165
[2]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[3]	EARN	1.) Carbognani, A. (2017) MPB 44, 52-57. (ASTEROIDS LIGHTCURVES ANALYSIS AT OAVDA: 2016 JANUARY - OCTOBER) (..,7350,10150, 357024,458198) 2.) Warner, B.D. (2017) MPB 44, 22-36. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2016 JULY-SEPTEMBER) (46 NEAs)
[4]	ESA Aegis	ESA orbit determination and impact monitoring system
[5]	EARN	1.) Masiero, J.R. et al. (2018) Astron. J. 154_168(10pp). (NEOWISE Reactivation Mission Year Three: Asteroid Diameters and Albedos) (170NEOs, 6110MBAs)
[6]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

8866

Unit

Source

[1]

Unobserved

Value

565

Unit

Source

[1]

Normalized RMS of residuals

Value

0.338142

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1999-12-31.23929

Unit

Source

[2]

Last Observation

Value

2024-04-09.441287

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

1281 (5)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

2016-08-31

Unit

Source

[3]

Last Observation

Value

2016-09-15

Unit

Source

[3]

Delay (Discarded)

Value

7 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

7 (0)

Unit

Source

[1]

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
[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 357024 1999YR14 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	1950-11-04 08:55	< 1 s	0.0805211	0.0805210	0.0000000
EARTH	1967-11-17 06:08	< 1 min	0.1972052	0.1972044	0.0000003
EARTH	1999-08-23 06:23	< 1 min	0.1241079	0.1241069	0.0000003
EARTH	2016-09-01 11:44	< 1 s	0.0558044	0.0558044	0.0000000
EARTH	2033-08-17 05:25	< 1 min	0.1872348	0.1872338	0.0000003
EARTH	2069-11-05 09:28	< 1 min	0.0799611	0.0799599	0.0000004
EARTH	2086-11-03 09:53	< 1 min	0.0677325	0.0677316	0.0000003
MARS	2087-03-05 11:18	< 1 min	0.0384704	0.0384701	0.0000001

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
351.43658671	258.33838031	0.00632761	MINIMUM
179.14099933	89.47366923	1.31216063	SADDLE
357.87401419	88.14223038	1.99047096	SADDLE
179.04800510	269.41277419	3.31171427	MAXIMUM

Download:

MOID Plots

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