Asteroids

85990 1999JV6 help

Last update: 2026-07-30 09:40 UTC

Orbital Properties

Epoch

61200.0

MJD

Orbit type

Apollo

Perihelion (q)

0.695

Aphelion (Q)

1.323

Eccentricity (e)

0.312

Inclination (i)

5.4

deg

Orbit period (P)

370.2

Earth MOID

0.03135

U parameter

0.0

A₂

-32.5

10^-15au/days²

Next Earth close approach

Date

2078-05-28

Nominal distance (from Earth center)

0.17256

25813934

Maximum Brightness

19.7

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

20.2

mag

Diameter

450

Taxonomic type

Rotation period (T)

6.543

Discovery Information

Discovery Date

1999-05-13

Observatory

Lincoln Laboratory ETS, New Mexico

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

1.009080

1-sigma variation

9.425E-10

Unit

Eccentricity (e)

Value

0.311567

1-sigma variation

9.162E-9

Unit

Inclination (i)

Value

5.3606

1-sigma variation

1.908E-6

Unit

Long. of Ascending Node (Ω)

Value

124.2003

1-sigma variation

7.575E-6

Unit

Arg. of Perihelion (ω)

Value

235.7094

1-sigma variation

7.572E-6

Unit

Mean Anomaly (M)

Value

175.62354

1-sigma variation

3.296E-6

Unit

Perihelion distance

Value

0.694684

1-sigma variation

Unit

Aphelion distance

Value

1.323476

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.120575

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.240718

1-sigma variation

Unit

MOID

Value

0.031353

1-sigma variation

Unit

Orbit Period

Value

370.2430

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

A₂

Value

-32.54611

1-sigma variation

2.17583

Unit

10^-15au/days²

Covariance Matrix

	a	e	i	Ω	ω	M	A₂
a	8.88289E-19	4.93401E-18	-1.22196E-15	4.84168E-15	-4.82787E-15	-3.04804E-15	2.00448E-9
e	4.93401E-18	8.39492E-17	-1.48085E-14	6.17020E-14	-6.21917E-14	-2.06811E-14	9.83425E-9
i	-1.22196E-15	-1.48085E-14	3.64063E-12	-1.43730E-11	1.43482E-11	4.42528E-12	-2.18934E-6
Ω	4.84168E-15	6.17020E-14	-1.43730E-11	5.73858E-11	-5.73475E-11	-1.79421E-11	8.83129E-6
ω	-4.82787E-15	-6.21917E-14	1.43482E-11	-5.73475E-11	5.73293E-11	1.79523E-11	-8.82831E-6
M	-3.04804E-15	-2.06811E-14	4.42528E-12	-1.79421E-11	1.79523E-11	1.08655E-11	-6.92369E-6
A₂	2.00448E-9	9.83425E-9	-2.18934E-6	8.83129E-6	-8.82831E-6	-6.92369E-6	4.73424E0

Date of computation: 2026-07-30 09:40 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

6.543

Unit

Source

[5]

Quality

Value

Unit

Source

[5]

Amplitude

Value

0.75-0.93

Unit

mag

Source

[5]

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]

[2]

[3]

Taxonomy (all)

Value

Unit

Source

[4]

[3]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

20.227

Unit

mag

Source

[6]

Slope Parameter (G)

Value

0.15**

Unit

Source

[6]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.095

0.073

Unit

Source

[9]

[7]

Diameter

Value

450

Unit

Source

[7]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

0.813

0.351

0.522

Unit

B-V

V-R

R-I

Source

[10]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Visual S

Unit

Source

[11]

[12]

Download this part as:

Sources

No.	Name	Additional
[1]	EARN	1.) Alexey V. Sergeyev and Benoit Carry A&A, 652 (2021) A59
[2]	EARN	1.) Michaël Marsset et al 2022 AJ 163 165
[3]	EARN	1.) Bus, S.J. & Binzel, R.P. (2002) Icarus 158,106-145. (Phase II of the Small Main-Belt Asteroid Spectrographic Survey: A Feature-Based Taxonomy.)
[4]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[5]	EARN	1.) Warner, B.D. (2015) MPB 42, 172-183. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2015 JANUARY - MARCH)(35NEAs) 2.) Warner, B.D. et al. (2014) MPB 41, 157-168. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2014 JANUARY-MARCH) (1943,4055,4954,25916,35107,40267,53435, 68031,85990,86039,138127,143409,243566,275677,277570,294739, 357622,377097,1995CR,2006DP14,2009CT,2009QF31,2011BT15, 2012AU10,2013XV8,2013YZ13,2013PD21,2013XF22,2013YZ37, 2013WT44,2014CR,2014EM,2014BR8,2014CG13,2014CU13,2014EY24, 2014AY28,2014EL45,2014BR57,2014DX110) 3.) Warner, B.D. (2016) MPB 43, 240-250. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2016 JANUARY-APRIL)(38NEAs)
[6]	ESA Aegis	ESA orbit determination and impact monitoring system
[7]	EARN	1.) Joseph R. Masiero et al 2020 Planet. Sci. J. 1 5
[8]	EARN	1.) Mainzer, A. et al. (2011) ApJ 743, 156. (NEOWISE Observations of Near-Earth Objects: Preliminary Results) (albedo and diameters of 428 NEOs) 2.) Mueller, M. et al. (2011) Astron. J. 141, 109. (ExploreNEOs. III. PHYSICAL CHARACTERIZATION OF 65 POTENTIAL SPACECRAFT TARGET ASTEROIDS) 3.) Binzel, R.P. et al. (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 255-271. (Physical Properties of NEOs) 4.) Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; et al. (2011) Astrophys. J. 741, A90. See also Grav 2012b and Masiero 2012.
[9]	EARN	1.) Mainzer, A. et al. (2011) ApJ 743, 156. (NEOWISE Observations of Near-Earth Objects: Preliminary Results) (albedo and diameters of 428 NEOs) 2.) Thomas, C.A. et al. (2011) Astron. J. 142, 85. (ExploreNEOs. V. AVERAGE ALBEDO BY TAXONOMIC COMPLEX IN THE NEAR-EARTH ASTEROID POPULATION) (new albedos data for 118 NEOs) 3.) Mueller, M. et al. (2011) Astron. J. 141, 109. (ExploreNEOs. III. PHYSICAL CHARACTERIZATION OF 65 POTENTIAL SPACECRAFT TARGET ASTEROIDS) 4.) Binzel, R.P. et al. (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 255-271. (Physical Properties of NEOs) 5.) Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; et al. (2011) Astrophys. J. 741, A90. See also Grav 2012b and Masiero 2012.
[10]	EARN	1.) Lin, C-H. et al. (2018) P&SS 152, 116-135. (Photometric survey and taxonomic identifications of 92 near-Earth asteroids)
[11]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage
[12]	EARN	1.) Binzel, R.P. et al. (2001) Icarus 151,139-149. (Spectral Properties of Near-Earth Objects: Palomar and IRTF Results for 48 Objects Including Spacecraft Targets (9969) Braille and (10302) 1989 ML)

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

9026

Unit

Source

[1]

Unobserved

Value

993

Unit

Source

[1]

Normalized RMS of residuals

Value

0.544619

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1999-05-13.29063

Unit

Source

[2]

Last Observation

Value

2024-01-28.25348

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

1193 (9)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2015-01-14

Unit

Source

[3]

Last Observation

Value

2017-01-16

Unit

Source

[3]

Delay (Discarded)

Value

15 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

15 (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

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Final Date: *

Output option:

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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 85990 1999JV6 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
VENUS	1959-02-19 13:04	< 1 min	0.0350289	0.0350287	0.0000001
VENUS	1979-04-26 05:51	< 1 min	0.0381513	0.0381505	0.0000003
EARTH	1996-05-29 10:09	< 1 s	0.1415910	0.1415906	0.0000001
VENUS	1996-07-19 08:48	< 1 min	0.0246797	0.0246794	0.0000001
EARTH	1997-06-01 18:40	< 1 s	0.0908643	0.0908641	0.0000001
EARTH	1998-06-05 05:53	< 1 s	0.0754847	0.0754846	0.0000000
EARTH	1999-06-09 02:23	< 1 s	0.1087374	0.1087372	0.0000001
EARTH	2000-06-17 04:44	< 1 min	0.1631662	0.1631660	0.0000001
VENUS	2010-09-25 06:52	< 1 min	0.0262829	0.0262828	0.0000000
EARTH	2014-01-11 16:19	< 1 s	0.1494582	0.1494582	0.0000000
EARTH	2015-01-05 11:15	< 1 s	0.0833120	0.0833120	0.0000000
EARTH	2016-01-06 01:08	< 1 s	0.0324063	0.0324063	0.0000000
EARTH	2017-01-07 04:46	< 1 s	0.0690566	0.0690566	0.0000000
EARTH	2018-01-10 01:15	< 1 s	0.1387523	0.1387523	0.0000000
VENUS	2042-03-02 22:13	< 1 min	0.0361708	0.0361707	0.0000000
VENUS	2059-04-24 04:16	< 1 min	0.0151876	0.0151874	0.0000001
EARTH	2078-05-28 11:12	< 1 min	0.1725555	0.1725358	0.0000066
EARTH	2079-06-01 01:20	< 1 min	0.1122841	0.1122727	0.0000038
EARTH	2080-06-03 14:16	< 1 min	0.0762556	0.0762542	0.0000005
EARTH	2081-06-07 08:55	< 1 s	0.0919930	0.0919917	0.0000004
EARTH	2082-06-13 05:58	< 1 min	0.1431405	0.1431367	0.0000012
EARTH	2083-07-06 03:32	2.1	0.1995418	0.1995343	0.0000025
VENUS	2090-09-20 20:54	10.7	0.0309682	0.0309497	0.0000062
EARTH	2095-01-23 00:48	6.4	0.1977536	0.1977169	0.0000122
EARTH	2096-01-09 23:46	3.0	0.1364427	0.1363972	0.0000152
EARTH	2097-01-04 21:16	< 1 min	0.0689401	0.0688974	0.0000143
EARTH	2098-01-05 23:53	< 1 min	0.0319640	0.0319535	0.0000035
EARTH	2099-01-08 11:50	< 1 min	0.0880796	0.0880313	0.0000161
EARTH	2100-01-11 14:21	< 1 min	0.1635420	0.1634861	0.0000186
VENUS	2107-11-25 00:52	5.9	0.0273160	0.0272487	0.0000224
VENUS	2122-01-28 12:59	41.7	0.0208548	0.0207216	0.0000446

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
86.73995262	0.60096113	0.03135274	MINIMUM
271.83765910	148.72801530	0.07437205	MINIMUM
358.27003359	254.32833656	0.31617363	SADDLE
180.06641611	74.73902151	0.33950484	SADDLE
356.47245358	71.81399482	1.68887609	SADDLE
177.56834040	252.92604556	2.32640926	MAXIMUM

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MOID Plots

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