Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
15755 (1992 ET5)
Classification: Main-belt Asteroid          SPK-ID: 2015755
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1663100645317418 3.6823e-08  
a 3.168713379805999 1.732e-08 au
q 2.64172445312787 1.179e-07 au
i 6.842329366528574 4.1199e-06 deg
node 124.4646901580046 3.1183e-05 deg
peri 236.5699968301367 3.3189e-05 deg
M 213.5680626072333 1.3099e-05 deg
tp 2460234.523449132391
(2023-Oct-17.02344913)
7.8645e-05 TDB
period 2060.263949649574
5.64
1.6892e-05
4.625e-08
d
yr
n .1747348926147213 1.4327e-09 deg/d
Q 3.695702306484129 2.0201e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1553  
   data-arc span      10685 days (29.25 yr)  
   first obs. used      1992-03-02  
   last obs. used      2021-06-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53575  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:30:37  

Additional Information
 Earth MOID = 1.64524 au 
 Jupiter MOID = 1.78168 au 
 T_jup = 3.170 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457487.5 (2016-Apr-09.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1647137595866577 3.6796e-08  
q 2.647475420172533 1.176e-07 au
tp 2458173.724402739527
(2018-Feb-24.22440274)
7.1174e-05 TDB
node 124.4805210489485 3.1182e-05 deg
peri 236.6693931984341 3.3231e-05 deg
i 6.841090712397 4.119e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1553  
   data-arc span      10685 days (29.25 yr)  
   first obs. used      1992-03-02  
   last obs. used      2021-06-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53575  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:30:37  

Additional Information
 Jupiter MOID = 1.78168 au 
 T_jup = 3.170 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.353910687666329E-15 -4.294924838175778E-15 -2.975938187833973E-13 4.929244392029321E-16 -7.013185702193677E-14 4.585171468850032E-16
q -4.294924838175778E-15 1.383081353771897E-14 1.338893285676957E-12 -3.639198572048694E-15 2.744195563878417E-13 -1.241139550162487E-15
tp -2.975938187833973E-13 1.338893285676957E-12 5.065737885719072E-9 -1.196421456118123E-11 8.334068949841767E-10 -2.242072457961708E-13
node 4.929244392029321E-16 -3.639198572048694E-15 -1.196421456118123E-11 9.723253149349619E-10 -9.67129447552373E-10 2.495405675398598E-11
peri -7.013185702193677E-14 2.744195563878417E-13 8.334068949841767E-10 -9.67129447552373E-10 1.104320529093504E-9 -2.483492207300418E-11
i 4.585171468850032E-16 -1.241139550162487E-15 -2.242072457961708E-13 2.495405675398598E-11 -2.483492207300418E-11 1.696582771595623E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.91   n/a MPO636301  
diameter diameter 8.378 km 0.157 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.252 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.041   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15755 (1992 ET5)          Discovered 1992-Mar-02 by UESAC at La Silla
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1992 ET5 = 1998 FS94 = 1999 JQ79 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-26 01:52 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin