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3512 Eriepa (1984 AC1)
Classification: Main-belt Asteroid          SPK-ID: 2003512
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .247005653718495 3.6499e-08  
a 2.248866884323642 6.784e-09 au
q 1.693384049435406 8.2411e-08 au
i 7.496765624315969 3.2868e-06 deg
node 112.7738900418083 3.4698e-05 deg
peri 301.0485256079469 3.537e-05 deg
M 326.6250278069196 8.9545e-06 deg
tp 2459114.699042496080
(2020-Sep-22.19904250)
3.0939e-05 TDB
period 1231.810922890072
3.37
5.5739e-06
1.526e-08
d
yr
n .2922526447122005 1.3224e-09 deg/d
Q 2.804349719211879 8.4596e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1899  
   data-arc span      15054 days (41.22 yr)  
   first obs. used      1979-08-14  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4602  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:59:41  

Additional Information
 Earth MOID = .719656 au 
 Jupiter MOID = 2.58094 au 
 T_jup = 3.577 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456481.5 (2013-Jul-08.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2478262303679573 3.6746e-08  
q 1.691478314308844 8.3055e-08 au
tp 2456649.739982900605
(2013-Dec-23.23998290)
2.5576e-05 TDB
node 112.858425673728 3.4771e-05 deg
peri 300.7631129118432 3.5415e-05 deg
i 7.489983179844583 3.2837e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1899  
   data-arc span      15054 days (41.22 yr)  
   first obs. used      1979-08-14  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4602  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:59:41  

Additional Information
 Jupiter MOID = 2.58094 au 
 T_jup = 3.577 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.35027390671285E-15 -3.04619728589017E-15 -2.439716008296473E-13 -1.23837640662714E-15 -8.884994023759531E-14 -1.884457267168047E-15
q -3.04619728589017E-15 6.89808753696571E-15 5.860350550550783E-13 2.247795641044798E-15 2.081547868070095E-13 4.32783092926319E-15
tp -2.439716008296473E-13 5.860350550550783E-13 6.541434637065957E-10 -4.302347535529156E-12 1.959185325191683E-10 4.068748379341989E-13
node -1.23837640662714E-15 2.247795641044798E-15 -4.302347535529156E-12 1.209004609078535E-9 -1.199371025475578E-9 9.271045602940469E-14
peri -8.884994023759531E-14 2.081547868070095E-13 1.959185325191683E-10 -1.199371025475578E-9 1.254239110846723E-9 6.64784190020365E-14
i -1.884457267168047E-15 4.32783092926319E-15 4.068748379341989E-13 9.271045602940469E-14 6.64784190020365E-14 1.078287004984121E-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 13.9   n/a MPO448948  
diameter diameter 4.880 km 0.889 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
rotation period rot_per 6.784 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Ditteon, R.; Hirsch, B.; Kirkpatrick, E.; Kramb, S.; et al. (2004) Minor Planet Bull. 31, 54-56.]
[Skiff, B.A. (2011) Posting on CALL web site. http://www.minorplanet.info/call.html]
[Szabo, R.; Pal, A.; Sarneczky, K.; Szabo, Gy.M.; et al. (2016) Astron. Astrophys. 596, A40.]
geometric albedo albedo 0.136   0.085 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

3512 Eriepa (1984 AC1)          Discovered 1984-Jan-08 by Wagner, J. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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