Asteroids

162004 1991VE help

Last update: 2025-03-12 04:02 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Aten

Perihelion (q)

0.299

Aphelion (Q)

1.483

Eccentricity (e)

0.665

Inclination (i)

7.2

deg

Orbit period (P)

307.1

Earth MOID

0.05756

U parameter

0.0

A₂

27.0

10^-15au/days²

Next Earth close approach

Date

2033-10-29

Nominal distance (from Earth center)

0.065

9724153

Maximum Brightness

15.7

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

18.3

mag

Diameter

600 - 1300*

Taxonomic type

Rotation period (T)

13.52

Discovery Information

Discovery Date

1991-11-03

Observatory

Palomar Mountain

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

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

0.890767

1-sigma variation

2.037E-9

Unit

Eccentricity (e)

Value

0.664701

1-sigma variation

2.666E-8

Unit

Inclination (i)

Value

7.2176

1-sigma variation

2.577E-6

Unit

Long. of Ascending Node (Ω)

Value

61.8475

1-sigma variation

1.559E-5

Unit

Arg. of Perihelion (ω)

Value

193.6663

1-sigma variation

1.544E-5

Unit

Mean Anomaly (M)

Value

28.31030

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.298673

1-sigma variation

Unit

Aphelion distance

Value

1.482861

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.416326

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.710195

1-sigma variation

Unit

MOID

Value

0.057564

1-sigma variation

Unit

Orbit Period

Value

307.0752

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

A₂

Value

27.04199

1-sigma variation

2.69147

Unit

10^-15au/days²

Covariance Matrix

	a	e	i	Ω	ω	M	A₂
a	4.14877E-18	-1.37642E-17	4.66267E-16	-2.00092E-15	4.54686E-15	-1.78761E-14	4.72042E-9
e	-1.37642E-17	7.10541E-16	1.71751E-14	1.98871E-14	-1.63431E-14	4.18347E-14	-2.35147E-8
i	4.66267E-16	1.71751E-14	6.64267E-12	2.27202E-11	-2.02655E-11	-6.49206E-12	1.11686E-6
Ω	-2.00092E-15	1.98871E-14	2.27202E-11	2.42903E-10	-2.38133E-10	8.19325E-13	-1.51662E-6
ω	4.54686E-15	-1.63431E-14	-2.02655E-11	-2.38133E-10	2.38433E-10	-1.38330E-11	4.25709E-6
M	-1.78761E-14	4.18347E-14	-6.49206E-12	8.19325E-13	-1.38330E-11	1.00518E-10	-1.50896E-5
A₂	4.72042E-9	-2.35147E-8	1.11686E-6	-1.51662E-6	4.25709E-6	-1.50896E-5	7.24404E0

Date of computation: 2025-02-25 14:19 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

13.52

Unit

Source

[3]

Quality

Value

2,T,U

Unit

Source

[3]

Amplitude

Value

1.11

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

18.288

Unit

mag

Source

[4]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[4]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[5]

Diameter

Value

600 - 1300*

Unit

Source

[5]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

0.369

0.414

0.69

Unit

V-R

R-I

B-V

Source

[6]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Unit

Source

[7]

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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.) Warner, B.D. (2015) MPB 42, 115-127. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2014 OCTOBER-DECEMBER)(43NEAs) 2.) Petr Pravec's Ondrejov NEO Photometric Program Webpage "Prepublished Periods"
[4]	ESA Aegis	ESA orbit determination and impact monitoring system
[5]	Estimation	Estimated from absolute magnitude
[6]	EARN	1.) Lin, C-H. et al. (2018) P&SS 152, 116-135. (Photometric survey and taxonomic identifications of 92 near-Earth asteroids)
[7]	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

25659

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.616232

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

1954-11-24.22083

Unit

Source

[2]

Last Observation

Value

2025-02-23.257277

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

1868 (48)

Unit

Source

[1]

Radar Summary

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

Radar

Value

Unit

Source

First Observation

Value

2015-01-26

Unit

Source

[3]

Last Observation

Value

2015-01-26

Unit

Source

[3]

Delay (Discarded)

Value

1 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

2 (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 162004 1991VE 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	1954-10-27 01:38	1.4	0.1641206	0.1639455	0.0000584
EARTH	1957-01-13 15:28	3.7	0.1492038	0.1490360	0.0000559
MERCURY	1958-11-18 15:29	6.9	0.0161404	0.0157251	0.0001384
EARTH	1959-10-31 02:41	3.7	0.1123858	0.1121811	0.0000682
MERCURY	1960-07-24 19:34	8.4	0.0256918	0.0252919	0.0001333
EARTH	1962-01-18 05:45	1.4	0.1749150	0.1747385	0.0000589
EARTH	1975-10-27 20:59	< 1 min	0.0661499	0.0661010	0.0000163
EARTH	1978-01-17 14:18	< 1 min	0.1032767	0.1032610	0.0000052
VENUS	1982-06-27 04:13	1.3	0.0489842	0.0489189	0.0000218
MERCURY	1984-01-19 02:11	2.2	0.0293283	0.0292296	0.0000329
MERCURY	1985-09-24 05:45	1.6	0.0171359	0.0170530	0.0000277
EARTH	1991-10-27 21:07	< 1 min	0.1803974	0.1803657	0.0000106
EARTH	1994-01-13 08:12	< 1 min	0.1666176	0.1665933	0.0000081
EARTH	1996-10-29 21:47	< 1 min	0.0940953	0.0940761	0.0000064
EARTH	1999-01-18 21:44	< 1 min	0.1572977	0.1572822	0.0000052
MERCURY	2005-02-15 17:51	< 1 min	0.0468116	0.0467797	0.0000106
MERCURY	2006-10-23 04:19	< 1 min	0.0063623	0.0063300	0.0000108
VENUS	2007-09-16 21:34	< 1 min	0.0491311	0.0491143	0.0000056
MERCURY	2008-06-28 08:33	< 1 min	0.0332392	0.0332154	0.0000080
EARTH	2012-10-26 20:03	< 1 min	0.0873685	0.0873652	0.0000011
EARTH	2015-01-17 03:31	< 1 s	0.1043253	0.1043251	0.0000001
EARTH	2017-11-02 23:16	< 1 s	0.1900041	0.1900039	0.0000001
MERCURY	2030-04-16 14:52	< 1 min	0.0169904	0.0169579	0.0000108
MERCURY	2031-12-21 20:01	< 1 min	0.0306992	0.0306523	0.0000156
EARTH	2033-10-29 03:25	< 1 min	0.0650020	0.0649846	0.0000058
EARTH	2036-01-19 07:00	< 1 min	0.1268750	0.1268461	0.0000096
EARTH	2049-10-27 02:25	< 1 min	0.1302728	0.1301562	0.0000389
MERCURY	2051-05-15 00:26	4.0	0.0211360	0.0208875	0.0000829
EARTH	2052-01-16 03:00	2.2	0.1268037	0.1267162	0.0000292
MERCURY	2053-01-18 03:17	5.1	0.0230164	0.0227684	0.0000827
EARTH	2054-11-01 14:28	2.4	0.1415556	0.1414202	0.0000451
MARS	2056-10-07 04:23	5.5	0.0495801	0.0495775	0.0000009
EARTH	2070-10-28 03:29	1.3	0.0667448	0.0666600	0.0000283
EARTH	2073-01-17 18:41	1.6	0.1032254	0.1032089	0.0000055
MERCURY	2073-03-01 07:23	6.4	0.0414104	0.0411430	0.0000891
MERCURY	2074-11-05 03:54	5.0	0.0105993	0.0104364	0.0000552
EARTH	2089-01-12 09:36	4.0	0.1966177	0.1964150	0.0000676
EARTH	2091-10-30 00:30	3.0	0.0638246	0.0637103	0.0000382
MERCURY	2092-07-21 07:17	6.4	0.0371878	0.0367655	0.0001408
VENUS	2092-08-11 03:17	5.0	0.0296801	0.0296181	0.0000212
EARTH	2094-01-19 04:43	1.3	0.1277382	0.1275661	0.0000575
MERCURY	2094-03-27 11:50	9.6	0.0081840	0.0076824	0.0001674
EARTH	2107-10-28 23:14	< 1 min	0.1338078	0.1336763	0.0000438
EARTH	2110-01-16 18:31	1.7	0.1320098	0.1319359	0.0000247
EARTH	2112-11-02 02:09	1.3	0.1307292	0.1306520	0.0000257
EARTH	2115-01-20 04:33	< 1 min	0.1900704	0.1900315	0.0000130
MERCURY	2116-01-13 18:09	1.3	0.0182186	0.0181607	0.0000193
MERCURY	2117-09-18 21:49	< 1 min	0.0304915	0.0304626	0.0000096
VENUS	2117-10-31 20:10	< 1 min	0.0372720	0.0372561	0.0000053

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
100.54112697	293.41284748	0.05756407	MINIMUM
260.62465913	14.51945087	0.10214268	MINIMUM
180.77993033	333.79995601	0.49885862	SADDLE
1.86650235	156.01427490	0.71627886	SADDLE
1.64935779	335.54890527	1.28376774	SADDLE
180.22242707	153.56205695	2.49714098	MAXIMUM

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MOID Plots

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