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 ]  
1630 Milet (1952 DA)
Classification: Main-belt Asteroid          SPK-ID: 2001630
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 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1683306261578877 2.9329e-08  
a 3.028918211546488 1.0227e-08 au
q 2.519058512415838 8.8745e-08 au
i 4.53676750676683 4.1343e-06 deg
node 54.44817827868174 4.2193e-05 deg
peri 95.25851524744569 4.424e-05 deg
M 44.39538860869032 1.2104e-05 deg
tp 2459159.053863447421
(2020-Nov-05.55386345)
6.4657e-05 TDB
period 1925.438921424282
5.27
9.7514e-06
2.67e-08
d
yr
n .1869703556910035 9.4691e-10 deg/d
Q 3.538777910677138 1.1948e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3298  
   data-arc span      35276 days (96.58 yr)  
   first obs. used      1924-12-23  
   last obs. used      2021-07-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4225  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:54:08  

Additional Information
 Earth MOID = 1.536 au 
 Jupiter MOID = 1.48124 au 
 T_jup = 3.217 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457142.5 (2015-Apr-30.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1698664037280188 2.9392e-08  
q 2.515041007659398 8.9356e-08 au
tp 2457236.501365872126
(2015-Aug-02.00136587)
6.3941e-05 TDB
node 54.50664128281117 4.221e-05 deg
peri 95.78447967871192 4.4202e-05 deg
i 4.536379936917185 4.1328e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3298  
   data-arc span      35276 days (96.58 yr)  
   first obs. used      1924-12-23  
   last obs. used      2021-07-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4225  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:54:08  

Additional Information
 Jupiter MOID = 1.48124 au 
 T_jup = 3.217 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.639115160043162E-16 -2.614535700755963E-15 5.879994939552937E-13 -4.641621042992348E-15 1.223054273558114E-13 -3.115843860264303E-16
q -2.614535700755963E-15 7.984422840604583E-15 -1.85673273012756E-12 1.459291234163165E-14 -3.867370871152632E-13 8.689849035741244E-16
tp 5.879994939552937E-13 -1.85673273012756E-12 4.088453998489353E-9 -1.591937056026427E-11 8.517563958755105E-10 -7.912902255401567E-13
node -4.641621042992348E-15 1.459291234163165E-14 -1.591937056026427E-11 1.781676354070747E-9 -1.778973622054511E-9 -4.702774443570734E-11
peri 1.223054273558114E-13 -3.867370871152632E-13 8.517563958755105E-10 -1.778973622054511E-9 1.95384380734771E-9 4.671647719015793E-11
i -3.115843860264303E-16 8.689849035741244E-16 -7.912902255401567E-13 -4.702774443570734E-11 4.671647719015793E-11 1.707994668914126E-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 11.64   n/a MPO636086  
diameter diameter 19.168 km 0.116 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 32.55 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:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pray, D. (2005) Minor Planet Bull. 32, 48-51.]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
geometric albedo albedo 0.102   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

1630 Milet (1952 DA)          Discovered 1952-Feb-28 by Boyer, L. at Algiers
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1952 DA = 1931 DQ = 1936 AB = 1942 GH = 1956 YL = A924 YD 
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-17 22:20 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin