Asteroids

2015VO142 help

Last update: 2025-11-24 16:53 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.939

Aphelion (Q)

1.210

Eccentricity (e)

0.126

Inclination (i)

0.3

deg

Orbit period (P)

407.0

Earth MOID

0.00279

U parameter

4.6

Next Earth close approach

Date

2026-03-17

Nominal distance (from Earth center)

0.00698

1043484

Maximum Brightness

20.8

mag

Risk

Object is in risk list

Physical Properties

Absolute Magnitude (H)

28.9

mag

Diameter

4 - 10*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2015-11-14

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

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.074856

1-sigma variation

0.000004

Unit

Eccentricity (e)

Value

0.126059

1-sigma variation

0.000008

Unit

Inclination (i)

Value

0.2844

1-sigma variation

0.0002

Unit

Long. of Ascending Node (Ω)

Value

95.3108

1-sigma variation

0.0299

Unit

Arg. of Perihelion (ω)

Value

20.3053

1-sigma variation

0.0281

Unit

Mean Anomaly (M)

Value

305.59325

1-sigma variation

0.02169

Unit

Perihelion distance

Value

0.939361

1-sigma variation

Unit

Aphelion distance

Value

1.210351

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.037306

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

0.180900

1-sigma variation

Unit

MOID

Value

0.002791

1-sigma variation

Unit

Orbit Period

Value

407.0275

1-sigma variation

Unit

U parameter

Value

4.6

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.47059E-11	2.90855E-11	-7.34574E-10	1.14534E-7	-1.07709E-7	-8.31863E-8
e	2.90855E-11	5.75479E-11	-1.45444E-9	2.26785E-7	-2.13274E-7	-1.64535E-7
i	-7.34574E-10	-1.45444E-9	3.68205E-8	-5.74191E-6	5.40007E-6	4.15590E-6
Ω	1.14534E-7	2.26785E-7	-5.74191E-6	8.95420E-4	-8.42115E-4	-6.47987E-4
ω	-1.07709E-7	-2.13274E-7	5.40007E-6	-8.42115E-4	7.91985E-4	6.09375E-4
M	-8.31863E-8	-1.64535E-7	4.15590E-6	-6.47987E-4	6.09375E-4	4.70559E-4

Date of computation: 2025-11-24 16:53 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

[1]

Taxonomy (all)

Value

Unit

Source

[2]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

28.892

Unit

mag

Source

[3]

Slope Parameter (G)

Value

0.15**

Unit

Source

[3]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[4]

Diameter

Value

4 - 10*

Unit

Source

[4]

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

[-]

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Sources

No.	Name	Additional
[1]	EARN	1.) Maxime Devogèle et al 2019 AJ 158 196
[2]	EARN	Earth Asteroids Research Node: https://earn.dlr.de
[3]	ESA Aegis	ESA orbit determination and impact monitoring system
[4]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

3763

Unit

Source

[1]

Normalized RMS of residuals

Value

0.401386

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2015-11-06.497654

Unit

Source

[2]

Last Observation

Value

2015-11-22.06765

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

113 (1)

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

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 2015VO142 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
EARTH	1958-08-04 08:22	> 1 d	0.1742389	0.1741210	0.0000393
EARTH	1959-04-15 10:23	151.9	0.1795035	0.1709443	0.0028533
EARTH	1969-10-20 10:25	> 1 d	0.0997606	0.0938536	0.0019705
EARTH	1970-01-31 14:49	> 1 d	0.0507021	0.0502919	0.0001378
EARTH	1980-11-10 10:34	62.3	0.1814843	0.1763845	0.0016999
EARTH	1981-07-22 10:25	> 1 d	0.1739944	0.1737580	0.0000788
EARTH	1992-10-07 01:41	1377.1	0.1139712	0.1127853	0.0003953
EARTH	1993-02-16 09:28	1410.0	0.0471026	0.0463976	0.0002351
EARTH	2004-08-05 07:50	739.3	0.1720298	0.1719483	0.0000272
EARTH	2005-04-11 04:09	29.5	0.1562108	0.1544587	0.0005841
EARTH	2015-11-24 02:22	< 1 s	0.0026248	0.0026240	0.0000002
EARTH	2016-05-18 11:51	21.8	0.1410058	0.1409670	0.0000129
EARTH	2025-09-17 13:57	644.6	0.1440166	0.1434903	0.0001755
EARTH	2026-03-17 05:10	136.3	0.0069753	0.0061895	0.0002764
EARTH	2034-01-11 11:59	> 1 w	0.0358025	0.0280521	0.0025906
EARTH	2041-12-07 04:36	> 1 w	0.0106104	0.0033129	0.0152569
EARTH	2042-04-18 04:44	> 1 mo	0.1259968	0.1041902	0.0073174
EARTH	2056-09-23 02:51	> 1 mo	0.1674444	0.0096574	0.7350881
EARTH	2057-03-15 21:38	> 1 mo	0.0615561	0.0033963	1.6495883
EARTH	2063-11-21 08:25	> 1 mo	0.0782429	0.0032979	1.8403775
EARTH	2064-05-17 18:34	> 1 mo	0.1742466	0.0099656	0.7541892
EARTH	2078-09-30 01:30	> 1 mo	0.1581930	0.0106218	1.4959730
EARTH	2079-03-14 17:21	> 1 mo	0.0423711	0.0032121	2.9932328
EARTH	2085-12-07 10:44	> 1 mo	0.0077325	0.0033842	9.9218551
EARTH	2098-11-21 06:37	> 1 mo	0.0660977	0.0039578	1256.9478658
EARTH	2099-05-02 17:32	> 1 mo	0.1697684	0.0001509	627.5605540
EARTH	2119-01-28 11:01	> 1 mo	0.0266317	0.0021591	1258.1866266

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Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
310.08922495	319.27282189	0.00279131	MINIMUM
54.40502358	73.87752188	0.00487650	MINIMUM
2.45098894	16.79020778	0.04483887	SADDLE
181.84683833	196.16730129	0.19281042	SADDLE
2.43985184	196.76786803	1.95688833	SADDLE
181.75520178	16.07778398	2.19448715	MAXIMUM

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MOID Plots

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

Level lines of the squared distance function

2015VO142

Date in UTC	MJD	σ	σ_imp	Distance ± Width in RE	Stretching in RE	IP	Impact energy	PS
2046-04-06.369	68441.369	3.528	0.000	3.78 ± 0.033	2.16E5	1.23E-8	3.43E-3	-9.69
2065-11-25.696	75614.696	-0.786	0.000	2.10 ± 0.119	5.46E6	3.76E-7	3.43E-3	-8.50
2065-11-25.761	75614.761	-0.777	0.000	3.72 ± 0.122	5.07E6	2.17E-7	3.42E-3	-8.74
2066-11-27.175	75981.175	3.183	0.000	1.68 ± 0.290	2.80E5	7.27E-8	3.41E-3	-9.22
2078-12-06.583	80373.583	-0.774	0.000	3.47 ± 1.268	3.24E5	3.61E-6	3.41E-3	-7.63
2080-05-12.208	80896.208	-0.775	0.000	0.88 ± 5.848	3.18E8	3.13E-9	3.42E-3	-10.70
2083-04-14.617	81963.617	3.627	0.000	1.38 ± 0.022	7.97E6	5.40E-10	3.41E-3	-11.48
2084-02-22.480	82277.480	-0.078	0.000	1.44 ± 0.083	5.46E6	5.59E-7	3.42E-3	-8.48
2085-12-03.716	82927.716	-0.908	0.013	0.86 ± 2.025	3.35E8	4.47E-8	3.51E-3	-9.58
2087-12-07.739	83661.739	-1.088	0.000	3.93 ± 0.986	1.45E6	4.19E-7	3.41E-3	-8.63
2090-12-05.535	84755.535	-0.937	0.000	3.99 ± 0.155	2.17E8	2.39E-9	3.41E-3	-10.89
2091-11-10.056	85095.056	-2.471	0.000	0.54 ± 31.564	6.24E6	1.99E-9	3.42E-3	-10.98
2094-03-10.407	85946.407	-3.858	0.000	0.57 ± 0.089	9.66E6	1.97E-10	3.41E-3	-11.99
2094-12-07.047	86218.047	-1.057	0.000	2.59 ± 0.887	3.31E7	4.18E-8	3.42E-3	-9.67
2095-11-22.318	86568.318	-1.289	0.880	4.11 ± 15.251	5.05E5	2.15E-7	3.51E-3	-8.96
2097-03-06.199	87038.199	0.295	0.000	2.34 ± 0.000	1.98E9	1.47E-9	3.42E-3	-11.14
2097-03-22.323	87054.323	2.001	0.000	3.66 ± 0.033	1.31E7	1.51E-8	3.42E-3	-10.13
2097-12-06.182	87313.182	-1.089	0.000	2.50 ± 0.836	1.62E8	8.70E-9	3.41E-3	-10.37
2098-03-01.015	87398.015	-0.368	0.000	3.26 ± 0.234	4.36E6	4.40E-7	3.41E-3	-8.67
2099-11-12.966	88019.966	-1.574	1.024	1.81 ± 1.936	1.12E6	1.47E-9	3.52E-3	-11.15
2099-11-28.889	88035.889	-0.826	0.000	2.29 ± 0.104	1.42E7	1.34E-7	3.43E-3	-9.19
2101-11-21.215	88758.215	-2.477	0.000	1.71 ± 145.641	1.06E8	2.51E-11	3.42E-3	-12.93
2102-11-29.823	89131.823	-0.885	0.000	0.68 ± 0.000	5.31E7	4.09E-8	3.42E-3	-9.73
2107-02-27.273	90682.273	0.883	0.000	2.49 ± 0.099	2.82E7	6.59E-8	3.41E-3	-9.54
2107-04-12.780	90726.780	3.547	0.000	3.34 ± 0.024	2.36E8	1.91E-11	3.40E-3	-13.08
2110-03-03.260	91782.260	1.093	0.000	2.14 ± 0.077	3.06E6	5.49E-7	3.42E-3	-8.64
2114-03-20.637	93260.637	0.940	0.000	3.50 ± 0.055	6.11E7	2.13E-8	3.41E-3	-10.07
2118-02-24.928	94697.928	-0.331	0.000	1.52 ± 0.083	9.47E6	3.00E-7	3.43E-3	-8.93
2120-03-14.903	95446.903	-0.001	0.000	1.47 ± 1.432	1.86E8	1.55E-8	3.42E-3	-10.23
2120-12-04.020	95711.020	-0.817	0.000	4.03 ± 0.283	3.99E7	1.30E-8	3.41E-3	-10.31
2122-03-11.656	96173.656	1.048	0.000	2.57 ± 0.000	7.36E7	2.00E-8	3.42E-3	-10.13
2122-03-18.763	96180.763	2.164	0.000	1.05 ± 0.100	9.89E6	3.05E-8	3.41E-3	-9.94


Based on 113 optical observations (of which 1 are rejected as outliers) from 2015/11/06.498 to 2015/11/22.068.
Coordinates are given on the Target Plane.
Unit is one Earth radius, but impact cross section has radius between 4.11 and 4.11 Earth radii.
Coordinates for LOV = EQU scaled= 1 second= F.
AstOD software version= 4.0, Date of computation=20250805 130500.123 UTC.

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