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
JPL Small-Body Database Browser
Search: [ help ]  
12195 (1979 MM4)
Classification: Main-belt Asteroid          SPK-ID: 2012195
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1676733534329934 3.8539e-08  
a 2.194172216445585 7.6356e-09 au
q 1.826268002904649 8.339e-08 au
i 2.800736394778744 4.3347e-06 deg
node 202.5381618583665 9.8073e-05 deg
peri 55.97543209967498 9.9232e-05 deg
M 235.6884975595918 1.5425e-05 deg
tp 2459410.433403958561
(2021-Jul-14.93340396)
5.1238e-05 TDB
period 1187.146985821576
3.25
6.1968e-06
1.697e-08
d
yr
n .3032480428283771 1.5829e-09 deg/d
Q 2.56207642998652 8.9159e-09 au
  Orbit Determination Parameters
   # obs. used (total)      792  
   data-arc span      14829 days (40.60 yr)  
   first obs. used      1979-06-23  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58137  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:16:26  

Additional Information
 Earth MOID = .81299 au 
 Jupiter MOID = 2.49151 au 
 T_jup = 3.650 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456458.5 (2013-Jun-15.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1675227935322623 3.849e-08  
q 1.827320548298894 8.3213e-08 au
tp 2457035.756929976444
(2015-Jan-13.25692998)
5.0494e-05 TDB
node 202.6330504499138 9.8036e-05 deg
peri 55.6512709377701 9.9202e-05 deg
i 2.800448805200195 4.3349e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      792  
   data-arc span      14829 days (40.60 yr)  
   first obs. used      1979-06-23  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58137  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:16:26  

Additional Information
 Jupiter MOID = 2.49151 au 
 T_jup = 3.650 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.481461208413165E-15 -3.194012032799761E-15 4.504294362931028E-13 1.070822338865806E-14 8.816133339162702E-14 -1.577896527960957E-15
q -3.194012032799761E-15 6.924482325679934E-15 -9.961866963317918E-13 -2.104615137200489E-14 -2.052365072671678E-13 3.331513974022921E-15
tp 4.504294362931028E-13 -9.961866963317918E-13 2.549595444074467E-9 1.326435364649407E-11 7.825829646968267E-10 -2.854070376403941E-12
node 1.070822338865806E-14 -2.104615137200489E-14 1.326435364649407E-11 9.611131432697313E-9 -9.595708745094357E-9 -8.312258247090208E-11
peri 8.816133339162702E-14 -2.052365072671678E-13 7.825829646968267E-10 -9.595708745094357E-9 9.841063254143675E-9 8.221307558599253E-11
i -1.577896527960957E-15 3.331513974022921E-15 -2.854070376403941E-12 -8.312258247090208E-11 8.221307558599253E-11 1.879171386472975E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.0   n/a MPO449031  
diameter diameter 3.594 km 0.140 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.065   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12195 (1979 MM4)          Discovered 1979-Jun-25 by Helin, E. F., Bus, S. J. at Siding Spring
Reference: 19991123/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1979 MM4 = 1998 HE19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-25 17:43 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin