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7977 (1977 QQ5)
Classification: Amor [NEO]          SPK-ID: 2007977
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 113 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4653954652107919 6.3562e-08  
a 2.227156536301347 1.0843e-08 AU
q 1.190647983992126 1.4142e-07 AU
i 25.16923253930086 9.5371e-06 deg
node 134.2281445974733 1.6021e-05 deg
peri 248.1097044595632 1.9344e-05 deg
M 64.8780453658423 1.7562e-05 deg
tp 2456781.713864586912
(2014-May-04.21386459)
5.7917e-05 JED
period 1214.016364157908
3.32
8.8655e-06
2.427e-08
d
yr
n .2965363652653157 2.1655e-09 deg/d
Q 3.263665088610568 1.5889e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      578  
   data-arc span      21929 days (60.04 yr)  
   first obs. used      1955-03-23  
   last obs. used      2015-04-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58867  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:00:05  

Additional Information
 Earth MOID = .359268 AU 
 T_jup = 3.384 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1 mag n/a MPO319185  
rotation period rot_per 7.457 h n/a LCDB (Rev. 2015-July); Warner et al., 2009 Incomplete or inconclusive result.
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (1998) http://www.asu.cas.cz/~ppravec/neo.htm]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J., in press.]
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

7977 (1977 QQ5)          Discovered 1977-Aug-21 by McNaught, R. H. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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